NRFI Results

First-inning leans for July 21, 2026, graded from final box scores.

All-time lean record

266-218

484 graded

55%

hit rate

NRFI

143-12454%

YRFI

123-9457%

3-2 on 7 leans

NRFI 0-2 · YRFI 3-0

NRFI Leans

3
109 logo
MIN@
110 logo
CLE6:40 PM ET
NRFI lean
Model 55% (low)Book -120 · 52%
Kendry Rojas
50% NRFI · 2 GS · 1/2 L5
MIN 1st: 36% (#2) · 37% vs hand
Parker Messick
95% NRFI · 19 GS · 4/5 L5
CLE 1st: 24% (#24) · 21% vs hand

Parker Messick has been nearly untouchable in opening frames, posting a 95% NRFI mark across 19 starts and keeping his slate clean in four of his last five. That's the anchor here, especially with Cleveland's bats scoring in the first just 24% of the time. Minnesota's Kendry Rojas is the wild card at 50% over a tiny two-start sample, which caps the confidence on this NRFI lean.

Progressive Field · park run factor 94
  • NRFI lean — Parker Messick has worked a scoreless first in 95% of his starts, the headline edge in a quiet matchup.
  • Books price this NRFI at -120 (52% implied); the model has it 55%.
  • The Cleveland Guardians score in the first in 24% of games, 24th-most in MLB, 21% against left-handers.
  • The Minnesota Twins score in the first in 36% of games, 2nd-most in MLB, 37% against left-handers.
102 logo
BAL@
104 logo
BOS7:10 PM ET
NRFI lean
Model 55% (low)Book -124 · 52%
Kyle Bradish
89% NRFI · 18 GS · 5/5 L5
BAL 1st: 24% (#25) · 11% vs hand
Eduardo Rivera
50% NRFI · 2 GS · 1/2 L5
BOS 1st: 23% (#27) · 21% vs hand

Kyle Bradish carries this lean, having kept the first frame clean in 89% of his 18 starts and all five of his last five outings. Boston helps too, scoring in the opening inning just 23% of the time and only 21% against righties. The main caution: Eduardo Rivera has just two starts on record, so his 50% NRFI is barely a sample. Fenway's 108 park factor keeps this from a firmer stance.

Fenway Park · park run factor 108
  • NRFI lean — Kyle Bradish has worked a scoreless first in 89% of his starts, the headline edge in a quiet matchup.
  • Books price this NRFI at -124 (52% implied); the model has it 55%.
  • The Boston Red Sox score in the first in 23% of games, 27th-most in MLB, 21% against right-handers.
  • The Baltimore Orioles score in the first in 24% of games, 25th-most in MLB, 11% against left-handers.
122 logo
CIN@
114 logo
SEA9:40 PM ET
NRFI lean
Model 59%Book -135 · 54%
Chase Burns
94% NRFI · 17 GS · 5/5 L5
CIN 1st: 27% (#22) · 29% vs hand
Luis Castillo
67% NRFI · 15 GS · 3/5 L5
SEA 1st: 29% (#20) · 27% vs hand

Chase Burns has been nearly untouchable early, posting a 94% NRFI mark across 17 starts and holding the line in all five of his last outings. Add T-Mobile Park's run-suppressing 83 factor and a Seattle lineup that scores first just 27% of the time against righties, and there's real support here. Luis Castillo's 67% NRFI is the softer side of this scoreless lean.

T-Mobile Park · park run factor 83
  • NRFI lean — Chase Burns (94% NRFI) and Luis Castillo (67%) have both buried the first inning, and neither lineup gets going early.
  • Books price this NRFI at -135 (54% implied); the model has it 59%.
  • The Seattle Mariners score in the first in 29% of games, 20th-most in MLB, 27% against right-handers.
  • The Cincinnati Reds score in the first in 27% of games, 22nd-most in MLB, 29% against right-handers.

YRFI Leans

4
124 logo
PIT@
103 logo
NYY7:05 PM ET
YRFI lean
Model 47%Book +105 · 46%
Bubba Chandler
78% NRFI · 18 GS · 5/5 L5
PIT 1st: 35% (#5) · 39% vs hand
Will Warren
72% NRFI · 18 GS · 3/5 L5
NYY 1st: 36% (#1) · 28% vs hand
Yankee Stadium · park run factor 100
  • YRFI lean — the New York Yankees push a first-inning run across in 36% of games (most in MLB), hard to keep off the board early.
  • Books price this NRFI at +105 (46% implied); the model has it 47%.
  • The New York Yankees score in the first in 36% of games, the most in MLB, 28% against right-handers.
  • The Pittsburgh Pirates score in the first in 35% of games, 5th-most in MLB, 39% against right-handers.
116 logo
MIA@
111 logo
HOU8:10 PM ET
YRFI lean
Model 47%Book -110 · 49%
Tyler Phillips
78% NRFI · 9 GS · 4/5 L5
MIA 1st: 32% (#12) · 32% vs hand
Tatsuya Imai
67% NRFI · 12 GS · 2/5 L5
HOU 1st: 36% (#4) · 40% vs hand

Houston's bats bring the intrigue here, plating a first-inning run in 36% of games — 4th-most in MLB — and 40% against righties like Tatsuya Imai. Imai himself has posted just a 67% NRFI clip over 12 starts, and cracked in three of his last five. Tyler Phillips has been the sturdier arm at 78% NRFI, but the model's 47% scoreless read tilts this slightly toward YRFI.

Daikin Park · park run factor 100
  • YRFI lean — the Houston Astros push a first-inning run across in 36% of games (4th-most in MLB), hard to keep off the board early.
  • Books price this NRFI at -110 (49% implied); the model has it 47%.
  • The Houston Astros score in the first in 36% of games, 4th-most in MLB, 40% against right-handers.
  • The Miami Marlins score in the first in 32% of games, 12th-most in MLB, 32% against right-handers.
120 logo
WSH@
127 logo
COL8:40 PM ET
YRFI lean
Model 36%Book +154 · 37%
Carson Palmquist
33% NRFI · 3 GS · 1/3 L5
WSH 1st: 36% (#3) · 38% vs hand
Michael Lorenzen
63% NRFI · 19 GS · 2/5 L5
COL 1st: 35% (#7) · 37% vs hand

Coors Field is doing a lot of the talking here with its 128 run factor, and both offenses give it plenty to work with — the Rockies plate a first-inning run 35% of the time, the Nationals 36%. Carson Palmquist doesn't help Washington's cause, posting just a 33% NRFI rate across his three starts, which tilts this toward YRFI at a 36% scoreless model number.

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 Washington Nationals score early in 36% of games.
  • Books price this NRFI at +154 (37% implied); the model has it 36%.
  • The Colorado Rockies score in the first in 35% of games, 7th-most in MLB, 37% against left-handers.
  • The Washington Nationals score in the first in 36% of games, 3rd-most in MLB, 38% against right-handers.
113 logo
OAK@
126 logo
ARI9:40 PM ET
YRFI lean
Model 47% (low)Book +105 · 46%
Jack Perkins
50% NRFI · 6 GS · 3/5 L5
OAK 1st: 29% (#18) · 31% vs hand
Kohl Drake
No season starts
ARI 1st: 31% (#15) · 31% vs hand

Chase Field's run-friendly 106 park factor sets the backdrop, and Jack Perkins hasn't helped his cause with a coin-flip 50% NRFI rate that's dipped to 3-for-5 over his last five starts. Kohl Drake's blank season slate leaves plenty of uncertainty for Arizona's side. With both offenses only scoring in the first around 30% of the time, though, it's a slim YRFI lean at best.

Chase Field · park run factor 106
  • YRFI lean — Chase Field (run factor 106) is one of the league's most hitter-friendly parks, and the Arizona Diamondbacks score early in 31% of games.
  • Books price this NRFI at +105 (46% implied); the model has it 47%.
  • The Arizona Diamondbacks score in the first in 31% of games, 15th-most in MLB, 31% against right-handers.
  • The Oakland Athletics score in the first in 29% of games, 18th-most in MLB, 31% against left-handers.

Coin Flips

8
128 logo
LAD@
118 logo
PHI6:40 PM ET
Coin flip
Model 50%Book -113 · 50%
Justin Wrobleski
73% NRFI · 15 GS · 4/5 L5
LAD 1st: 33% (#11) · 32% vs hand
Zack Wheeler
87% NRFI · 15 GS · 5/5 L5
PHI 1st: 31% (#16) · 31% vs hand

Wheeler has stranded the first inning in all five of his last outings and posts an elite 87% NRFI, so the arms clearly favor a quiet start. But the model still splits this at 50%, and it's easy to see why — both offenses, the Dodgers and Phillies, plate a first-inning run about a third of the time, and Citizens Bank Park nudges scoring slightly above average.

Citizens Bank Park · park run factor 102
  • Coin flip — Zack Wheeler's 87% NRFI is the case for the under; the Los Angeles Dodgers' 33% first-inning bats (11th-most in MLB) are the case for the over.
  • Books price this NRFI at -113 (50% implied); the model has it 50%.
  • The Philadelphia Phillies score in the first in 31% of games, 16th-most in MLB, 31% against left-handers.
  • The Los Angeles Dodgers score in the first in 33% of games, 11th-most in MLB, 32% against right-handers.
105 logo
TB@
101 logo
TOR7:07 PM ET
Coin flip
Model 50%Book -138 · 55%
Drew Rasmussen
76% NRFI · 17 GS · 4/5 L5
TB 1st: 35% (#6) · 35% vs hand
Kevin Gausman
63% NRFI · 19 GS · 2/5 L5
TOR 1st: 23% (#28) · 25% vs hand

Drew Rasmussen has kept the first frame clean in 76% of his 17 starts, including four of his last five, which normally screams NRFI. The wrinkle is Tampa Bay's offense, one of the game's best at striking early — scoring in the first 35% of the time — lined up against Kevin Gausman, who's posted a middling 63% NRFI rate. That tension leaves this a true coin flip.

Rogers Centre · park run factor 100
  • Coin flip — Drew Rasmussen's 76% NRFI is the case for the under; the Tampa Bay Rays' 35% first-inning bats (6th-most in MLB) are the case for the over.
  • Books price this NRFI at -138 (55% implied); the model has it 50%.
  • The Toronto Blue Jays score in the first in 23% of games, 28th-most in MLB, 25% against right-handers.
  • The Tampa Bay Rays score in the first in 35% of games, 6th-most in MLB, 35% against right-handers.
129 logo
SD@
119 logo
ATL7:15 PM ET
Coin flip
Model 50%Book -105.5 · 48%
Walker Buehler
79% NRFI · 19 GS · 3/5 L5
SD 1st: 23% (#30) · 22% vs hand
Reynaldo Lopez
25% NRFI · 8 GS · 1/5 L5
ATL 1st: 32% (#13) · 36% vs hand

Walker Buehler's 79% first-inning shutdown rate is the loudest number on this card, and San Diego's bats back him up — they score in the opening frame just 23% of the time, dead last in MLB. The problem is Reynaldo Lopez, whose 25% NRFI mark drags the other side down against a Braves lineup that plates a first-inning run 32% of the time. That tug-of-war lands right at 50/50.

Truist Park · park run factor 102
  • Coin flip — Walker Buehler's 79% NRFI is the case for the under; the Atlanta Braves' 32% first-inning bats (13th-most in MLB) are the case for the over.
  • Books price this NRFI at -105.5 (48% implied); the model has it 50%.
  • The Atlanta Braves score in the first in 32% of games, 13th-most in MLB, 36% against right-handers.
  • The San Diego Padres score in the first in 23% of games, 30th-most in MLB, 22% against right-handers.
117 logo
NYM@
123 logo
MIL7:40 PM ET
Coin flip
Model 52%Book -110 · 49%
Zac Thornton
Zac ThorntonLHP
33% NRFI · 3 GS · 1/3 L5
NYM 1st: 27% (#23) · 23% vs hand
Brandon Sproat
67% NRFI · 15 GS · 2/5 L5
MIL 1st: 28% (#21) · 36% vs hand

Brandon Sproat brings the sturdiest number to American Family Field, sitting on a 67% NRFI rate across 15 starts, but he's been shakier lately with scoreless firsts in just 2 of his last 5. The Mets' Zac Thornton is the flip side at 33% NRFI, and with both lineups slow to strike early — Milwaukee scoring in the first just 28% of the time, New York 27% — the model lands right on the fence at 52% scoreless.

American Family Field · park run factor 94
  • Coin flip — Brandon Sproat's 67% NRFI is the case for the under; the Milwaukee Brewers' 28% first-inning bats (21st-most in MLB) are the case for the over.
  • Books price this NRFI at -110 (49% implied); the model has it 52%.
  • The Milwaukee Brewers score in the first in 28% of games, 21st-most in MLB, 36% against left-handers.
  • The New York Mets score in the first in 27% of games, 23rd-most in MLB, 23% against right-handers.
130 logo
SF@
108 logo
KC7:40 PM ET
Coin flip
Model 47%Book -108.5 · 49%
Tyler Mahle
57% NRFI · 14 GS · 3/5 L5
SF 1st: 23% (#29) · 21% vs hand
Luinder Avila
44% NRFI · 9 GS · 3/5 L5
KC 1st: 33% (#10) · 30% vs hand

Tyler Mahle brings the steadier first-inning arm here, sitting at 57% NRFI over 14 starts, while Kansas City's Luinder Avila trails at just 44%. That gap is offset by the Royals' bats scoring in the opening frame 33% of the time against a Giants offense that plates a first-inning run in only 23% of games. With the model at 47% and the book at 49%, it reads as a true toss-up.

Kauffman Stadium · park run factor 102
  • Coin flip — Tyler Mahle's 57% NRFI is the case for the under; the Kansas City Royals' 33% first-inning bats (10th-most in MLB) are the case for the over.
  • Books price this NRFI at -108.5 (49% implied); the model has it 47%.
  • The Kansas City Royals score in the first in 33% of games, 10th-most in MLB, 30% against right-handers.
  • The San Francisco Giants score in the first in 23% of games, 29th-most in MLB, 21% against right-handers.
106 logo
CHW@
115 logo
TEX8:05 PM ET
Coin flip
Model 47%Book -109 · 49%
Noah Schultz
64% NRFI · 11 GS · 2/5 L5
CHW 1st: 31% (#17) · 26% vs hand
Kumar Rocker
38% NRFI · 16 GS · 3/5 L5
TEX 1st: 29% (#19) · 25% vs hand

Kumar Rocker's 38% first-inning clean rate over 16 starts is the drag here, and it clashes with the strengths on the other side: Noah Schultz has posted a 64% NRFI mark and the Rangers plate a run in the first just 25% of the time against lefties. Globe Life's 94 run factor nudges things down slightly, leaving this a genuine toss-up at 47%.

Globe Life Field · park run factor 94
  • Coin flip — Noah Schultz's 64% NRFI is the case for the under; the Chicago White Sox's 31% first-inning bats (17th-most in MLB) are the case for the over.
  • Books price this NRFI at -109 (49% implied); the model has it 47%.
  • The Texas Rangers score in the first in 29% of games, 19th-most in MLB, 25% against left-handers.
  • The Chicago White Sox score in the first in 31% of games, 17th-most in MLB, 26% against right-handers.
107 logo
DET@
121 logo
CHC8:05 PM ET
Coin flip
Model 49%Book -123.5 · 52%
Framber Valdez
72% NRFI · 18 GS · 5/5 L5
DET 1st: 34% (#8) · 29% vs hand
David Peterson
30% NRFI · 10 GS · 2/5 L5
CHC 1st: 23% (#26) · 17% vs hand

Framber Valdez is the clear anchor here, posting a 72% first-inning shutout rate that lines up nicely against a Cubs lineup scoring in the opening frame just 17% of the time versus lefties. The wrinkle is on the other side: David Peterson has escaped a clean first in only 30% of his starts, and Detroit's bats rank eighth in MLB at first-inning scoring. Those competing forces leave this one a genuine toss-up at 49%.

Wrigley Field · park run factor 94
  • Coin flip — Framber Valdez's 72% NRFI is the case for the under; the Detroit Tigers' 34% first-inning bats (8th-most in MLB) are the case for the over.
  • Books price this NRFI at -123.5 (52% implied); the model has it 49%.
  • The Chicago Cubs score in the first in 23% of games, 26th-most in MLB, 17% against left-handers.
  • The Detroit Tigers score in the first in 34% of games, 8th-most in MLB, 29% against left-handers.
125 logo
STL@
112 logo
LAA9:38 PM ET
Coin flip
Model 48%Book +0.5 · 64%
Matthew Liberatore
61% NRFI · 18 GS · 3/5 L5
STL 1st: 32% (#14) · 27% vs hand
Walbert Urena
87% NRFI · 15 GS · 4/5 L5
LAA 1st: 33% (#9) · 33% vs hand

Walbert Urena has been elite in the opening frame for the Angels, posting an 87% NRFI mark across 15 starts, and the Cardinals only plate a first-inning run 27% of the time against righties. The gap comes from the other side: Liberatore sits at 61% NRFI, and the model's 48% scoreless read lands well under the book's 64%.

Angel Stadium · park run factor 102
  • Coin flip — Walbert Urena's 87% NRFI is the case for the under; the Los Angeles Angels' 33% first-inning bats (9th-most in MLB) are the case for the over.
  • Books price this NRFI at +0.5 (64% implied); the model has it 48%.
  • The Los Angeles Angels score in the first in 33% of games, 9th-most in MLB, 33% against left-handers.
  • The St. Louis Cardinals score in the first in 32% of games, 14th-most in MLB, 27% against right-handers.

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

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