NRFI Results

First-inning leans for August 29, 2026, graded from final box scores.

All-time lean record

302-249

551 graded

55%

hit rate

NRFI

165-14553%

YRFI

137-10457%

6-5 on 11 leans

NRFI 5-4 · YRFI 1-1

NRFI Leans

9
104 logo
BOS@
103 logo
NYY1:05 PM ET
NRFI lean
Model 56%Book -130 · 53%
Jake Bennett
93% NRFI · 15 GS · 4/5 L5
BOS 1st: 24% (#28) · 24% vs hand
Carlos Rodon
73% NRFI · 11 GS · 5/5 L5
NYY 1st: 28% (#19) · 35% vs hand

Jake Bennett has kept the first inning clean in 93% of his 15 starts, and that's the number driving this lean — Boston's lefty simply doesn't hand out early runs. Carlos Rodon backs it up with five straight scoreless openers, facing a Red Sox lineup that scores in the first just 24% of the time and no better against southpaws. The model's 56% edges the book's 53%, with Yankee Stadium playing dead average.

Yankee Stadium · park run factor 100
  • NRFI lean — Jake Bennett (93% NRFI) and Carlos Rodon (73%) have both buried the first inning, and neither lineup gets going early.
  • Books price this NRFI at -130 (53% implied); the model has it 56%.
  • The New York Yankees score in the first in 28% of games, 19th-most in MLB, 35% against left-handers.
  • The Boston Red Sox score in the first in 24% of games, 28th-most in MLB, 24% against left-handers.
114 logo
SEA@
101 logo
TOR3:07 PM ET
NRFI lean
Model 54% (low)Book -142.5 · 55%
Kade Anderson
100% NRFI · 1 GS · 1/1 L5
SEA 1st: 31% (#14) · 29% vs hand
Jose Soriano
76% NRFI · 25 GS · 5/5 L5
TOR 1st: 23% (#30) · 17% vs hand

Jose Soriano has kept the first inning clean in 76% of his 25 starts, including each of his last five, and Toronto's bats give him plenty of help on the other side — the Blue Jays plate a first-inning run just 23% of the time, 30th in MLB, and only 17% against lefties like Kade Anderson. The catch is Anderson's one-start sample, which is why the 54% model number sits right on the book's 55% and the lean stays mild.

Rogers Centre · park run factor 100
  • NRFI lean — Jose Soriano has worked a scoreless first in 76% of his starts, the headline edge in a quiet matchup.
  • Books price this NRFI at -142.5 (55% implied); the model has it 54%.
  • The Toronto Blue Jays score in the first in 23% of games, 30th-most in MLB, 17% against left-handers.
  • The Seattle Mariners score in the first in 31% of games, 14th-most in MLB, 29% against right-handers.
116 logo
MIA@
120 logo
WSH4:05 PM ET
NRFI lean
Model 53%Book -145 · 55%
Sandy Alcantara
85% NRFI · 27 GS · 5/5 L5
MIA 1st: 29% (#17) · 31% vs hand
Cade Cavalli
78% NRFI · 27 GS · 5/5 L5
WSH 1st: 32% (#7) · 31% vs hand

Sandy Alcantara has kept the first inning clean in 85% of his 27 starts, and Cade Cavalli isn't far behind at 78% — both are riding a 5-for-5 stretch over their last five outings. The pushback comes from Washington's bats, which put a run on the board in the first 32% of the time, seventh-most in the majors, in a Nationals Park that plays slightly hitter-friendly at 102. Model lands at 53% scoreless, a hair under the book's 55%.

Nationals Park · park run factor 102
  • NRFI lean — Sandy Alcantara (85% NRFI) and Cade Cavalli (78%) have both buried the first inning, and neither lineup gets going early.
  • Books price this NRFI at -145 (55% implied); the model has it 53%.
  • The Washington Nationals score in the first in 32% of games, 7th-most in MLB, 31% against right-handers.
  • The Miami Marlins score in the first in 29% of games, 17th-most in MLB, 31% against right-handers.
126 logo
ARI@
130 logo
SF4:05 PM ET
NRFI lean
Model 54% (low)Book -121.5 · 52%
Merrill Kelly
67% NRFI · 24 GS · 4/5 L5
ARI 1st: 30% (#16) · 27% vs hand
Matt Wilkinson
100% NRFI · 2 GS · 2/2 L5
SF 1st: 25% (#27) · 21% vs hand

Merrill Kelly has kept the first inning clean in 67% of his 24 starts, including four of his last five, and he's facing a Giants lineup that scores in the opening frame just 25% of the time — 21% against righties. Matt Wilkinson is 2-for-2 in scoreless firsts, though two starts tells you very little. Oracle Park's 94 run factor nudges things further toward NRFI, hence the modest 54% read.

Oracle Park · park run factor 94
  • NRFI lean — Merrill Kelly has worked a scoreless first in 67% of his starts, the headline edge in a quiet matchup.
  • Books price this NRFI at -121.5 (52% implied); the model has it 54%.
  • The San Francisco Giants score in the first in 25% of games, 27th-most in MLB, 21% against right-handers.
  • The Arizona Diamondbacks score in the first in 30% of games, 16th-most in MLB, 27% against left-handers.
108 logo
KC@
110 logo
CLE4:10 PM ET
NRFI lean
Model 54%Book -125 · 52%
Daniel Lynch IV
50% NRFI · 4 GS · 2/4 L5
KC 1st: 31% (#10) · 32% vs hand
Foster Griffin
80% NRFI · 25 GS · 3/5 L5
CLE 1st: 27% (#22) · 25% vs hand

Foster Griffin has kept the first inning clean in 80% of his 25 starts, and that's the backbone of the lean here — Kansas City puts a run on the board in the opening frame 31% of the time, but Griffin's track record blunts that. On the other side, Daniel Lynch IV is the wobblier half at 50% NRFI across just four starts, though Cleveland's bats only strike first 27% of the time (25% against lefties). Progressive Field's 94 run factor nudges it further toward quiet, hence the modest 54% scoreless read against a market at 52%.

Progressive Field · park run factor 94
  • NRFI lean — Foster Griffin has worked a scoreless first in 80% of his starts, the headline edge in a quiet matchup.
  • Books price this NRFI at -125 (52% implied); the model has it 54%.
  • The Cleveland Guardians score in the first in 27% of games, 22nd-most in MLB, 25% against left-handers.
  • The Kansas City Royals score in the first in 31% of games, 10th-most in MLB, 32% against left-handers.
129 logo
SD@
105 logo
TB4:10 PM ET
NRFI lean
Model 57%Book -116.5 · 51%
Walker Buehler
81% NRFI · 26 GS · 4/5 L5
SD 1st: 23% (#29) · 20% vs hand
Nick Martinez
83% NRFI · 24 GS · 3/5 L5
TB 1st: 32% (#9) · 30% vs hand

Walker Buehler and Nick Martinez both sit above 80% NRFI on the season — 81% across 26 starts for Buehler, 83% over 24 for Martinez — which is a tough combination to score against early. San Diego's offense compounds it, plating a first-inning run in just 23% of games and 20% against righties. Tropicana Field's 95 run factor nudges the model to 57%, ahead of the market's 51%.

Tropicana Field · park run factor 95
  • NRFI lean — Walker Buehler (81% NRFI) and Nick Martinez (83%) have both buried the first inning, and neither lineup gets going early.
  • Books price this NRFI at -116.5 (51% implied); the model has it 57%.
  • The Tampa Bay Rays score in the first in 32% of games, 9th-most in MLB, 30% against right-handers.
  • The San Diego Padres score in the first in 23% of games, 29th-most in MLB, 20% against right-handers.
104 logo
BOS@
103 logo
NYY7:15 PM ET
NRFI lean
Model 54% (low)Book -146 · 56%
Alec Gamboa
Alec GamboaLHP
100% NRFI · 1 GS · 1/1 L5
BOS 1st: 24% (#28) · 24% vs hand
Max Fried
71% NRFI · 14 GS · 3/5 L5
NYY 1st: 28% (#19) · 35% vs hand

Max Fried has kept the first inning clean in 71% of his 14 starts, and he's facing a Red Sox offense that plates a run in the opening frame just 24% of the time — 28th in MLB, with no bump against lefties. The counterweight is Alec Gamboa, who owns a spotless first-inning mark but across exactly one start, so there's little to lean on. The model's 54% sits just under the book's 56%, making this a mild NRFI tilt rather than a strong one.

Yankee Stadium · park run factor 100
  • NRFI lean — Max Fried has worked a scoreless first in 71% of his starts, the headline edge in a quiet matchup.
  • Books price this NRFI at -146 (56% implied); the model has it 54%.
  • The New York Yankees score in the first in 28% of games, 19th-most in MLB, 35% against left-handers.
  • The Boston Red Sox score in the first in 24% of games, 28th-most in MLB, 24% against left-handers.
115 logo
TEX@
123 logo
MIL7:15 PM ET
NRFI lean
Model 57%Book -118 · 51%
Cal Quantrill
90% NRFI · 10 GS · 5/5 L5
TEX 1st: 28% (#21) · 22% vs hand
Shane Drohan
87% NRFI · 15 GS · 4/5 L5
MIL 1st: 28% (#20) · 26% vs hand

Cal Quantrill has kept the first inning clean in nine of 10 starts this year, including all five of his last five, and Shane Drohan isn't far behind at 87% across 15 outings. Neither offense pushes early either — Texas and Milwaukee both plate a first-inning run in just 28% of games, and the Rangers dip to 22% against lefties. American Family Field's 94 run factor nudges it further toward zeros.

American Family Field · park run factor 94
  • NRFI lean — Cal Quantrill (90% NRFI) and Shane Drohan (87%) have both buried the first inning, and neither lineup gets going early.
  • Books price this NRFI at -118 (51% implied); the model has it 57%.
  • The Milwaukee Brewers score in the first in 28% of games, 20th-most in MLB, 26% against right-handers.
  • The Texas Rangers score in the first in 28% of games, 21st-most in MLB, 22% against left-handers.
126 logo
ARI@
130 logo
SF10:05 PM ET
NRFI lean
Model 54% (low)Book -128 · 53%
Mitch Bratt
78% NRFI · 9 GS · 4/5 L5
ARI 1st: 30% (#16)
Yunior Marte
Yunior Marte
No season starts
SF 1st: 25% (#27) · 22% vs hand
Oracle Park · park run factor 94
  • NRFI lean — Mitch Bratt has worked a scoreless first in 78% of his starts, the headline edge in a quiet matchup.
  • Books price this NRFI at -128 (53% implied); the model has it 54%.
  • The San Francisco Giants score in the first in 25% of games, 27th-most in MLB, 22% against left-handers.
  • The Arizona Diamondbacks score in the first in 30% of games, 16th-most in MLB.

YRFI Leans

2
106 logo
CHW@
109 logo
MIN2:10 PM ET
YRFI lean
Model 44%Book -0.5 · 1%
Erick Fedde
42% NRFI · 12 GS · 2/5 L5
CHW 1st: 32% (#8) · 30% vs hand
Bailey Ober
74% NRFI · 19 GS · 4/5 L5
MIN 1st: 35% (#2) · 35% vs hand

Erick Fedde has kept the first inning clean in just 42% of his 12 starts, and he's walking into Target Field (104 run factor) against a Twins lineup that puts a run on the board in the opening frame 35% of the time — second-most in baseball. That's the engine behind the YRFI lean. Bailey Ober is the counterweight at 74% NRFI, which is why the model still gives a scoreless first a 44% shot.

Target Field · park run factor 104
  • YRFI lean — the Minnesota Twins push a first-inning run across in 35% of games (2nd-most in MLB), hard to keep off the board early.
  • Books price this NRFI at -0.5 (1% implied); the model has it 44%.
  • The Minnesota Twins score in the first in 35% of games, 2nd-most in MLB, 35% against right-handers.
  • The Chicago White Sox score in the first in 32% of games, 8th-most in MLB, 30% against right-handers.
102 logo
BAL@
113 logo
OAK10:05 PM ET
YRFI lean
Model 46%Book -1 · 2%
Shane Baz
64% NRFI · 25 GS · 4/5 L5
BAL 1st: 25% (#26) · 31% vs hand
Jack Perkins
55% NRFI · 11 GS · 3/5 L5
OAK 1st: 28% (#18) · 28% vs hand

Sutter Health Park's 117 run factor is doing most of the heavy lifting here, because neither offense has been especially quick out of the gate — Oakland plates a first-inning run in 28% of games, Baltimore just 25%. Shane Baz has kept the first clean in 64% of his 25 starts, and Jack Perkins sits at 55%, so the modest YRFI lean is really a ballpark story more than a pitching one.

Sutter Health Park · park run factor 117
  • YRFI lean — Sutter Health Park (run factor 117) is one of the league's most hitter-friendly parks, and the Oakland Athletics score early in 28% of games.
  • Books price this NRFI at -1 (2% implied); the model has it 46%.
  • The Oakland Athletics score in the first in 28% of games, 18th-most in MLB, 28% against right-handers.
  • The Baltimore Orioles score in the first in 25% of games, 26th-most in MLB, 31% against right-handers.

Coin Flips

6
128 logo
LAD@
107 logo
DET1:10 PM ET
Coin flip
Model 51%Book -127 · 52%
Blake Snell
75% NRFI · 4 GS · 3/4 L5
LAD 1st: 31% (#11) · 32% vs hand
Keider Montero
86% NRFI · 21 GS · 3/5 L5
DET 1st: 33% (#4) · 30% vs hand

Keider Montero has kept the first inning clean in 86% of his 21 starts, easily the strongest number on the board here, and Blake Snell counters at 75% across his four. The tension comes from Detroit's bats, which put up a run in the opening frame 33% of the time — fourth-most in MLB — though only 30% against lefties. At 51% scoreless in the model versus 52% implied, Comerica gives no real tilt either way.

Comerica Park · park run factor 100
  • Coin flip — Keider Montero's 86% NRFI is the case for the under; the Detroit Tigers' 33% first-inning bats (4th-most in MLB) are the case for the over.
  • Books price this NRFI at -127 (52% implied); the model has it 51%.
  • The Detroit Tigers score in the first in 33% of games, 4th-most in MLB, 30% against left-handers.
  • The Los Angeles Dodgers score in the first in 31% of games, 11th-most in MLB, 32% against right-handers.
124 logo
PIT@
125 logo
STL2:15 PM ET
Coin flip
Model 52%Book -120 · 52%
Lake Bachar
67% NRFI · 6 GS · 3/5 L5
PIT 1st: 30% (#15) · 34% vs hand
Kyle Leahy
88% NRFI · 24 GS · 5/5 L5
STL 1st: 31% (#12) · 25% vs hand

Kyle Leahy has kept the first inning clean in 88% of his 24 starts and is 5-for-5 in his last five, which is the sturdiest number on the board. The pushback comes from Lake Bachar, who sits at 67% NRFI across just six starts, and a Pirates lineup that plates a first-inning run 34% of the time against righties. Neutral Busch Stadium leaves this near a true 52% split.

Busch Stadium · park run factor 100
  • Coin flip — Kyle Leahy's 88% NRFI is the case for the under; the St. Louis Cardinals' 31% first-inning bats (12th-most in MLB) are the case for the over.
  • Books price this NRFI at -120 (52% implied); the model has it 52%.
  • The St. Louis Cardinals score in the first in 31% of games, 12th-most in MLB, 25% against right-handers.
  • The Pittsburgh Pirates score in the first in 30% of games, 15th-most in MLB, 34% against right-handers.
122 logo
CIN@
121 logo
CHC2:20 PM ET
Coin flip
Model 52%Book +1.5 · 64%
Andrew Abbott
58% NRFI · 26 GS · 4/5 L5
CIN 1st: 26% (#24) · 28% vs hand
Kevin Gausman
65% NRFI · 26 GS · 4/5 L5
CHC 1st: 26% (#23) · 25% vs hand

Andrew Abbott's 58% first-inning shutout rate across 26 starts is the soft spot here — modest for a pitcher opposing Kevin Gausman, who's held the zero in 65% of his starts and four of his last five. Both offenses are quiet early, with the Cubs and Reds each plating a first-inning run in just 26% of games, and Wrigley's 94 run factor trims the margins further. Still, the model's 52% scoreless read sits well under the market's 64%, making this closer to a toss-up than the price suggests.

Wrigley Field · park run factor 94
  • Coin flip — Kevin Gausman's 65% NRFI is the case for the under; the Cincinnati Reds' 26% first-inning bats (24th-most in MLB) are the case for the over.
  • Books price this NRFI at +1.5 (64% implied); the model has it 52%.
  • The Chicago Cubs score in the first in 26% of games, 23rd-most in MLB, 25% against left-handers.
  • The Cincinnati Reds score in the first in 26% of games, 24th-most in MLB, 28% against right-handers.
127 logo
COL@
119 logo
ATL4:10 PM ET
Coin flip
Model 48% (low)Book 0 · 0%
Zach Agnos
50% NRFI · 2 GS · 1/2 L5
COL 1st: 32% (#6) · 37% vs hand
Martin Perez
71% NRFI · 21 GS · 4/5 L5
ATL 1st: 31% (#13) · 31% vs hand

Martin Perez has kept the first frame clean in 71% of his 21 starts, four of five most recently — comfortably the sturdiest number on this card. Working against that, Zach Agnos offers only two starts to judge, and Colorado puts a run on the board in the opening inning 32% of the time, 37% against lefties. With Truist Park carrying a 102 run factor, 48% scoreless is a true coin flip.

Truist Park · park run factor 102
  • Coin flip — Martin Perez's 71% NRFI is the case for the under; the Colorado Rockies' 32% first-inning bats (6th-most in MLB) are the case for the over.
  • Books price this NRFI at 0 (0% implied); the model has it 48%.
  • The Atlanta Braves score in the first in 31% of games, 13th-most in MLB, 31% against right-handers.
  • The Colorado Rockies score in the first in 32% of games, 6th-most in MLB, 37% against left-handers.
111 logo
HOU@
117 logo
NYM4:10 PM ET
Coin flip
Model 52% (low)Book -125 · 52%
Bennett Sousa
Bennett SousaLHP
No season starts
HOU 1st: 34% (#3) · 36% vs hand
Nolan McLean
76% NRFI · 25 GS · 4/5 L5
NYM 1st: 26% (#25) · 26% vs hand

Nolan McLean has kept the first inning clean in 76% of his 25 starts, including four of his last five, and he'll need that against a Houston lineup that plates a run in the opening frame 34% of the time — third-most in MLB and 36% against righties. The wild card is Bennett Sousa, who has no starts on the season, so the Mets' quiet 26% first-inning rate is the only read there. Model and book agree at 52% NRFI, and pitcher-friendly Citi Field (94 park factor) doesn't tip it either way.

Citi Field · park run factor 96
  • Coin flip — Nolan McLean's 76% NRFI is the case for the under; the Houston Astros' 34% first-inning bats (3rd-most in MLB) are the case for the over.
  • Books price this NRFI at -125 (52% implied); the model has it 52%.
  • The New York Mets score in the first in 26% of games, 25th-most in MLB, 26% against left-handers.
  • The Houston Astros score in the first in 34% of games, 3rd-most in MLB, 36% against right-handers.
118 logo
PHI@
112 logo
LAA10:07 PM ET
Coin flip
Model 47%Book -114 · 50%
Cristopher Sanchez
76% NRFI · 25 GS · 4/5 L5
PHI 1st: 33% (#5) · 28% vs hand
Ryan Johnson
75% NRFI · 12 GS · 4/5 L5
LAA 1st: 35% (#1) · 38% vs hand

Cristopher Sanchez has kept the first inning clean in 76% of his 25 starts, and Ryan Johnson counters at 75% over his 12 — both with four scoreless openers in their last five. The tension comes from the bats: the Angels put up a first-inning run in 35% of games, most in MLB, and the Phillies rank fifth at 33%. At 47% scoreless in a slightly run-friendly Angel Stadium, it's genuinely even.

Angel Stadium · park run factor 102
  • Coin flip — Cristopher Sanchez's 76% NRFI is the case for the under; the Los Angeles Angels' 35% first-inning bats (most in MLB) are the case for the over.
  • Books price this NRFI at -114 (50% implied); the model has it 47%.
  • The Los Angeles Angels score in the first in 35% of games, the most in MLB, 38% against left-handers.
  • The Philadelphia Phillies score in the first in 33% of games, 5th-most in MLB, 28% against right-handers.

First-inning results graded from final box scores. Verdicts are informational, not betting advice.

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