NRFI Results

First-inning leans for September 5, 2026, graded from final box scores.

All-time lean record

270-218

488 graded

55%

hit rate

NRFI

146-12454%

YRFI

124-9457%

0-0 on 6 leans

NRFI 0-0 · YRFI 0-0

NRFI Leans

3
121 logo
CHC@
116 logo
MIA4:10 PM ET
NRFI lean
Model 53%Book -114 · 50%
Javier Assad
90% NRFI · 10 GS · 5/5 L5
CHC 1st: 28% (#22) · 27% vs hand
Ryan Gusto
79% NRFI · 14 GS · 4/5 L5
MIA 1st: 29% (#17) · 31% vs hand

Javier Assad has kept the first inning clean in nine of his 10 starts, including each of his last five, and Ryan Gusto isn't far behind at 79% across 14 outings. Neither offense pushes much early either — Miami plates a first-inning run in 29% of games, the Cubs 28% — so the 53% model number edging the book's 50% fits, even in a slightly run-friendly loanDepot park.

loanDepot park · park run factor 102
  • NRFI lean — Javier Assad (90% NRFI) and Ryan Gusto (79%) have both buried the first inning, and neither lineup gets going early.
  • Books price this NRFI at -114 (50% implied); the model has it 53%.
  • The Miami Marlins score in the first in 29% of games, 17th-most in MLB, 31% against right-handers.
  • The Chicago Cubs score in the first in 28% of games, 22nd-most in MLB, 27% against right-handers.
107 logo
DET@
110 logo
CLE6:10 PM ET
NRFI lean
Model 55%Book -149 · 56%
Framber Valdez
65% NRFI · 26 GS · 3/5 L5
DET 1st: 33% (#4) · 30% vs hand
Parker Messick
89% NRFI · 27 GS · 4/5 L5
CLE 1st: 27% (#24) · 25% vs hand

Parker Messick has kept the first inning clean in 89% of his 27 starts, which is about as strong a top-of-the-first number as you'll find, and Cleveland's bats have been quiet early too — first-inning runs in just 27% of games, 24th in MLB. Detroit's offense ranks fourth in first-inning scoring, but Progressive Field's 94 run factor trims the ceiling. Model and market land close at 55-56% NRFI.

Progressive Field · park run factor 94
  • NRFI lean — Framber Valdez (65% NRFI) and Parker Messick (89%) have both buried the first inning, and neither lineup gets going early.
  • Books price this NRFI at -149 (56% implied); the model has it 55%.
  • The Cleveland Guardians score in the first in 27% of games, 24th-most in MLB, 25% against left-handers.
  • The Detroit Tigers score in the first in 33% of games, 4th-most in MLB, 30% against left-handers.
103 logo
NYY@
129 logo
SD7:15 PM ET
NRFI lean
Model 57%Book -139 · 54%
Carlos Rodon
67% NRFI · 12 GS · 4/5 L5
NYY 1st: 28% (#23) · 33% vs hand
Robbie Ray
84% NRFI · 25 GS · 5/5 L5
SD 1st: 24% (#30) · 33% vs hand

Robbie Ray has kept the first inning clean in 84% of his 25 starts, including each of his last five, and Petco's 94 run factor doesn't do the Yankees any favors either. Carlos Rodon counters at 67%, and San Diego's bats have opened scoring in just 24% of games — 30th in MLB. The model's 57% scoreless read edges the book's 54%.

Petco Park · park run factor 94
  • NRFI lean — Carlos Rodon (67% NRFI) and Robbie Ray (84%) have both buried the first inning, and neither lineup gets going early.
  • Books price this NRFI at -139 (54% implied); the model has it 57%.
  • The San Diego Padres score in the first in 24% of games, 30th-most in MLB, 33% against left-handers.
  • The New York Yankees score in the first in 28% of games, 23rd-most in MLB, 33% against left-handers.

YRFI Leans

3
109 logo
MIN@
106 logo
CHW7:10 PM ET
YRFI lean
Model 45%Book -121.5 · 52%
Taj Bradley
58% NRFI · 26 GS · 3/5 L5
MIN 1st: 37% (#1) · 35% vs hand
Anthony Kay
72% NRFI · 25 GS · 4/5 L5
CHW 1st: 31% (#7) · 30% vs hand

Minnesota's bats lead the majors in first-inning scoring, plating a run 37% of the time and 35% against lefties like Anthony Kay — and while Kay's 72% NRFI mark across 25 starts is the best number on the board, he's the one holding back the sport's most dangerous opening frame. Taj Bradley sits at just 58% clean firsts, and the White Sox rank 7th in MLB at 31%. Model reads 45% scoreless against a 52% market number, tilting YRFI.

Rate Field · park run factor 98
  • YRFI lean — the Minnesota Twins push a first-inning run across in 37% of games (most in MLB), hard to keep off the board early.
  • Books price this NRFI at -121.5 (52% implied); the model has it 45%.
  • The Chicago White Sox score in the first in 31% of games, 7th-most in MLB, 30% against right-handers.
  • The Minnesota Twins score in the first in 37% of games, the most in MLB, 35% against left-handers.
101 logo
TOR@
108 logo
KC7:10 PM ET
YRFI lean
Model 45%Book +105 · 46%
Max Scherzer
46% NRFI · 13 GS · 2/5 L5
TOR 1st: 24% (#29) · 26% vs hand
Seth Lugo
48% NRFI · 27 GS · 2/5 L5
KC 1st: 32% (#6) · 28% vs hand

Kansas City puts up a first-inning run in 32% of its games, sixth-most in the majors, and Max Scherzer hasn't done much to quiet that — he's held the first scoreless in just 46% of his 13 starts, including two of his last five. Seth Lugo sits at a similar 48%, though Toronto's bats rank 29th at scoring early. Kauffman's 102 run factor nudges things along; the model's 45% scoreless read lines up almost exactly with the book's 46%.

Kauffman Stadium · park run factor 102
  • YRFI lean — the Kansas City Royals push a first-inning run across in 32% of games (6th-most in MLB), hard to keep off the board early.
  • Books price this NRFI at +105 (46% implied); the model has it 45%.
  • The Kansas City Royals score in the first in 32% of games, 6th-most in MLB, 28% against right-handers.
  • The Toronto Blue Jays score in the first in 24% of games, 29th-most in MLB, 26% against right-handers.
125 logo
STL@
127 logo
COL8:10 PM ET
YRFI lean
Model 41% (low)Book +112 · 44%
Matthew Liberatore
62% NRFI · 26 GS · 4/5 L5
STL 1st: 30% (#13) · 24% vs hand
Mason Adams
Mason AdamsRHP
100% NRFI · 2 GS · 2/2 L5
COL 1st: 31% (#8) · 33% vs hand

Coors Field's 128 run factor does a lot of the talking here, and the Rockies back it up by plating a first-inning run in 31% of their games — eighth-most in MLB. Mason Adams carries a spotless first inning through two starts, but that's a two-game sample, and Matthew Liberatore's 62% NRFI rate over 26 turns leaves room for St. Louis to answer. The model's 41% scoreless read sits just under the book's 44%.

Coors Field · park run factor 128
  • YRFI lean — Coors Field (run factor 128) is one of the league's most hitter-friendly parks, and the Colorado Rockies score early in 31% of games.
  • Books price this NRFI at +112 (44% implied); the model has it 41%.
  • The Colorado Rockies score in the first in 31% of games, 8th-most in MLB, 33% against left-handers.
  • The St. Louis Cardinals score in the first in 30% of games, 13th-most in MLB, 24% against right-handers.

Coin Flips

9
130 logo
SF@
117 logo
NYM4:10 PM ET
Coin flip
Model 51% (low)Book -122.5 · 52%
Anthony Molina
Anthony MolinaRHP
0% NRFI · 1 GS · 0/1 L5
SF 1st: 26% (#27) · 24% vs hand
Zac Thornton
Zac ThorntonLHP
45% NRFI · 11 GS · 3/5 L5
NYM 1st: 28% (#19) · 26% vs hand

Zac Thornton's 45% first-inning shutout rate across 11 starts is the only meaningful track record on the mound here — Anthony Molina has exactly one big-league start, and a first-inning run scored in it, which tells us almost nothing. Both offenses are quiet early, with the Mets plating a run in the first 28% of the time and the Giants 26%, and Citi Field's 96 run factor trims the margins further. The model's 51% NRFI sits right on top of the book's 52%.

Citi Field · park run factor 96
  • Coin flip — Zac Thornton's 45% NRFI is the case for the under; the New York Mets' 28% first-inning bats (19th-most in MLB) are the case for the over.
  • Books price this NRFI at -122.5 (52% implied); the model has it 51%.
  • The New York Mets score in the first in 28% of games, 19th-most in MLB, 26% against right-handers.
  • The San Francisco Giants score in the first in 26% of games, 27th-most in MLB, 24% against left-handers.
119 logo
ATL@
118 logo
PHI6:05 PM ET
Coin flip
Model 50%Book -119 · 51%
Martin Perez
73% NRFI · 22 GS · 4/5 L5
ATL 1st: 30% (#15) · 30% vs hand
Zack Wheeler
78% NRFI · 23 GS · 3/5 L5
PHI 1st: 32% (#5) · 39% vs hand

Zack Wheeler has kept the first inning clean in 78% of his 23 starts, and Martin Perez isn't far behind at 73% over 22 — on paper, that's a quiet opening frame. The complication is Philadelphia's offense, which plates a run in the first in 32% of games (fifth-most in MLB) and jumps to 39% against lefties like Perez. With Citizens Bank Park playing slightly hot, the model sits right at 50%.

Citizens Bank Park · park run factor 102
  • Coin flip — Zack Wheeler's 78% NRFI is the case for the under; the Philadelphia Phillies' 32% first-inning bats (5th-most in MLB) are the case for the over.
  • Books price this NRFI at -119 (51% implied); the model has it 50%.
  • The Philadelphia Phillies score in the first in 32% of games, 5th-most in MLB, 39% against left-handers.
  • The Atlanta Braves score in the first in 30% of games, 15th-most in MLB, 30% against right-handers.
112 logo
LAA@
124 logo
PIT6:40 PM ET
Coin flip
Model 50%Book -139 · 54%
Yusei Kikuchi
88% NRFI · 8 GS · 5/5 L5
LAA 1st: 35% (#2) · 34% vs hand
Braxton Ashcraft
77% NRFI · 26 GS · 4/5 L5
PIT 1st: 31% (#10) · 17% vs hand

Yusei Kikuchi has kept the first inning clean in 88% of his eight starts, including each of his last five, and the Pirates have only put up a first-inning run 17% of the time against lefties. The pushback comes from the other side: the Angels rank second in MLB at scoring in the first (35%) and hold that rate at 34% versus righties like Braxton Ashcraft, whose own 77% NRFI mark is solid but not airtight. PNC Park's 98 run factor barely nudges it either way, leaving this a true 50/50.

PNC Park · park run factor 98
  • Coin flip — Yusei Kikuchi's 88% NRFI is the case for the under; the Los Angeles Angels' 35% first-inning bats (2nd-most in MLB) are the case for the over.
  • Books price this NRFI at -139 (54% implied); the model has it 50%.
  • The Pittsburgh Pirates score in the first in 31% of games, 10th-most in MLB, 17% against left-handers.
  • The Los Angeles Angels score in the first in 35% of games, 2nd-most in MLB, 34% against right-handers.
123 logo
MIL@
122 logo
CIN6:40 PM ET
Coin flip
Model 47%Book -108 · 49%
Dustin May
68% NRFI · 25 GS · 4/5 L5
MIL 1st: 29% (#16) · 36% vs hand
Andrew Abbott
56% NRFI · 27 GS · 3/5 L5
CIN 1st: 26% (#26) · 28% vs hand

Dustin May has kept the first inning clean in 68% of his 25 starts, and Cincinnati's offense ranks 26th in MLB at scoring in the opening frame (26%), so one half of this is tilted firmly toward zeros. The other half isn't: Andrew Abbott sits at 56% NRFI, Milwaukee plates a run in the first 36% of the time against lefties, and Great American Ball Park's 106 run factor doesn't help. Model says 47%, book 49% — essentially a toss-up.

Great American Ball Park · park run factor 106
  • Coin flip — Dustin May's 68% NRFI is the case for the under; the Milwaukee Brewers' 29% first-inning bats (16th-most in MLB) are the case for the over.
  • Books price this NRFI at -108 (49% implied); the model has it 47%.
  • The Cincinnati Reds score in the first in 26% of games, 26th-most in MLB, 28% against right-handers.
  • The Milwaukee Brewers score in the first in 29% of games, 16th-most in MLB, 36% against left-handers.
105 logo
TB@
115 logo
TEX7:05 PM ET
Coin flip
Model 52%Book -148 · 56%
Drew Rasmussen
84% NRFI · 25 GS · 5/5 L5
TB 1st: 31% (#9) · 30% vs hand
Jacob deGrom
58% NRFI · 26 GS · 3/5 L5
TEX 1st: 28% (#21) · 27% vs hand

Drew Rasmussen has kept the first inning clean in 84% of his 25 starts, including each of his last five — that's the anchor here. The wobble comes on the other side: Jacob deGrom sits at 58% NRFI and draws a Tampa Bay lineup that plates a run in the opening frame 31% of the time, ninth-most in MLB. Globe Life's 94 run factor helps, but at 52% scoreless the model reads this closer to even than the book's 56%.

Globe Life Field · park run factor 94
  • Coin flip — Drew Rasmussen's 84% NRFI is the case for the under; the Tampa Bay Rays' 31% first-inning bats (9th-most in MLB) are the case for the over.
  • Books price this NRFI at -148 (56% implied); the model has it 52%.
  • The Texas Rangers score in the first in 28% of games, 21st-most in MLB, 27% against right-handers.
  • The Tampa Bay Rays score in the first in 31% of games, 9th-most in MLB, 30% against right-handers.
104 logo
BOS@
102 logo
BAL7:05 PM ET
Coin flip
Model 53%Book -135.5 · 38%
Sonny Gray
71% NRFI · 24 GS · 4/5 L5
BOS 1st: 27% (#25) · 25% vs hand
Chris Bassitt
62% NRFI · 13 GS · 3/5 L5
BAL 1st: 25% (#28) · 30% vs hand

Sonny Gray has kept the first inning clean in 71% of his 24 starts, and he draws a Baltimore lineup that scores in the opening frame just 25% of the time — 28th in the majors. Chris Bassitt's 62% mark against a Red Sox offense that plates a first-inning run in 27% of games adds to the quiet setup, yet the model still lands at 53% scoreless, well above the 38% the book implies. Camden Yards plays dead average for runs, so this one reads closer to a toss-up than the numbers first suggest.

Oriole Park at Camden Yards · park run factor 100
  • Coin flip — Sonny Gray's 71% NRFI is the case for the under; the Boston Red Sox's 27% first-inning bats (25th-most in MLB) are the case for the over.
  • Books price this NRFI at -135.5 (38% implied); the model has it 53%.
  • The Baltimore Orioles score in the first in 25% of games, 28th-most in MLB, 30% against right-handers.
  • The Boston Red Sox score in the first in 27% of games, 25th-most in MLB, 25% against right-handers.
126 logo
ARI@
111 logo
HOU7:15 PM ET
Coin flip
Model 50%Book -105 · 48%
Brandon Pfaadt
80% NRFI · 15 GS · 4/5 L5
ARI 1st: 29% (#18) · 29% vs hand
Ethan Pecko
67% NRFI · 3 GS · 2/3 L5
HOU 1st: 34% (#3) · 37% vs hand

Brandon Pfaadt has kept the first inning clean in 80% of his 15 starts, but he runs into a Houston lineup that plates a first-inning run 34% of the time — third-most in MLB and 37% against righties. Ethan Pecko's 67% NRFI mark comes on just three starts, so there's little to lean on there. At neutral Daikin Park, the model's 50% sits right on the market's 48%.

Daikin Park · park run factor 100
  • Coin flip — Brandon Pfaadt's 80% 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 -105 (48% implied); the model has it 50%.
  • The Houston Astros score in the first in 34% of games, 3rd-most in MLB, 37% against right-handers.
  • The Arizona Diamondbacks score in the first in 29% of games, 18th-most in MLB, 29% against right-handers.
120 logo
WSH@
128 logo
LAD9:10 PM ET
Coin flip
Model 51%Book -148 · 56%
Cade Cavalli
79% NRFI · 28 GS · 5/5 L5
WSH 1st: 30% (#14) · 29% vs hand
Tyler Glasnow
75% NRFI · 8 GS · 3/5 L5
LAD 1st: 30% (#12) · 31% vs hand

Cade Cavalli has kept the first inning clean in 79% of his 28 starts, including each of his last five, and Tyler Glasnow's 75% mark is right there with him. The catch is the offenses: both the Dodgers and Nationals put up a first-inning run in 30% of their games, and Dodger Stadium plays slightly above average at 102. The model lands at 51% scoreless, a shade under the book's 56%.

Dodger Stadium · park run factor 102
  • Coin flip — Cade Cavalli's 79% NRFI is the case for the under; the Los Angeles Dodgers' 30% first-inning bats (12th-most in MLB) are the case for the over.
  • Books price this NRFI at -148 (56% implied); the model has it 51%.
  • The Los Angeles Dodgers score in the first in 30% of games, 12th-most in MLB, 31% against right-handers.
  • The Washington Nationals score in the first in 30% of games, 14th-most in MLB, 29% against right-handers.
113 logo
OAK@
114 logo
SEA9:40 PM ET
Coin flip
Model 51%Book -130 · 53%
Jeffrey Springs
46% NRFI · 24 GS · 2/5 L5
OAK 1st: 28% (#20) · 28% vs hand
George Kirby
64% NRFI · 25 GS · 2/5 L5
SEA 1st: 31% (#11) · 30% vs hand

George Kirby has kept the first inning clean in 64% of his 25 starts, and T-Mobile Park's 83 run factor only helps that side of the ledger. The counterweight is Jeffrey Springs, who's posted a 46% NRFI mark and has faced a Seattle lineup that plates a first-inning run in 31% of its games — 11th-most in MLB. Those forces roughly cancel, hence the 51% scoreless model read against a book number of 53%.

T-Mobile Park · park run factor 83
  • Coin flip — George Kirby's 64% NRFI is the case for the under; the Seattle Mariners' 31% first-inning bats (11th-most in MLB) are the case for the over.
  • Books price this NRFI at -130 (53% implied); the model has it 51%.
  • The Seattle Mariners score in the first in 31% of games, 11th-most in MLB, 30% against left-handers.
  • The Oakland Athletics score in the first in 28% of games, 20th-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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