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
YRFI
3-2 on 7 leans
NRFI 0-2 · YRFI 3-0
NRFI Leans
3

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.
- 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.


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.
- 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.


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.
- 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

- 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.


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.
- 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.


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.
- 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.


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.
- 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


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.
- 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.


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.
- 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.


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.
- 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.


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.
- 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.


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.
- 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.


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%.
- 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.


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%.
- 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.


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%.
- 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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