Quick Answer
Eight sides price past fair on Wednesday's 15-game board; the three biggest edges I see all sit on the runs side, born of the market over-juicing quiet storylines. Alcantara's streak is the quiet side's best story, priced honestly. The full board, with every price against true odds, is below.
Prices pulled 10:45 a.m. ET; first pitch from 12:35 p.m. ET.
Fifteen MLB games carry a first-inning market Wednesday, August 19: San Diego's league-quietest first inning is now a price problem, Arizona's loud first meets a juiced number at Fenway, and two streaking arms in Milwaukee set up the board's biggest edge. Monday's edition graded every edge negative; Wednesday hands eight back. The loudest price lands last.
The Market Has Memorized San Diego's Quiet Firsts
Padres At Mets — King Vs. Stock, YRFI +106
San Diego still owns baseball's quietest first inning, a run in 39% of its games, 11 points under league, and Michael King is clean in eight of his last 10. That story is fully bought: NRFI costs -109 against a true -102. The overshoot pushes YRFI +106 past its true +102, and 36-year-old Robert Stock, tagged for a three-run first on August 8, makes his fourth start of the season.
The trend read: the quiet trend is real; the quiet price isn't. The value leaked to the loud side.
Arizona's Loud First Meets A Quiet Price At Fenway
D-Backs At Red Sox — Pfaadt Vs. Tolle, YRFI +125
Diamondbacks games see a first-inning run 56% of the time, top-six in MLB. The market leaned quiet anyway because Brandon Pfaadt is clean in nine of his last 10, pricing NRFI at -127 against a true -121. Payton Tolle, six of 10 with Fenway at 53%, is the softer half; the overshoot leaves YRFI +125 past its true +121.
The trend read: the same quiet-side tax as Queens, paid against the loudest environment of the three.
Two Streaking Arms Set Up Milwaukee's Overcooked Price
Mariners At Brewers — Gilbert Vs. May, YRFI +138
Here it is. Dustin May hasn't allowed a first-inning run in seven straight starts; Logan Gilbert is on three straight and clean in seven of his last 10. The market read the same logs and juiced NRFI to -145 against a true -131: San Diego's tax, one size bigger, leaving YRFI +138 as the board's largest edge with Seattle's above-league 52% rate as the counterweight.
The Worked Example: What +138 Breaks Even At
+138 breaks even at 42.0%; the true +131 implies 43.3%. That 1.3-point gap, paid at plus-money, is worth the board-best 3.0% edge in expected value.
The trend read: nothing here says runs are likely — it says runs are underpriced. Streak worship, not first-inning scoring, built that +138.
Where Wednesday's Board Goes From Here
The pattern across all three: the trend is real, and it's exactly why the other side pays. The number I keep coming back to is Milwaukee's +138. Five more sides beat fair by thinner margins: Athletics-Royals NRFI -104, Dodgers-Rockies NRFI +138, Tigers-Pirates YRFI +117, Giants-Guardians YRFI +127, and the quiet side I trust most, Sandy Alcantara's 10 straight clean firsts at Marlins-Phillies NRFI -103, a true -104. None of the five tops 1.5%: shopping targets, not stories. Watch items: Athletics-Royals had no starters named at write time; Matt Wilkinson and Ethan Pecko bring zero 2026 starts, so those rows run thin. Prices move as lineups post.
New to these markets? Our NRFI betting explainer covers how first-inning prices get built, how to remove the vig explains where those true odds come from, and Monday's edition shows what an all-negative board looks like.
Run the card yourself: the first-inning Odds Screen shops every NRFI/YRFI number across 100-plus books, the full live odds screen does the same for game lines across every major book, and OS Pro's no-vig pricing prints the true line beside each so you can find the sides that beat fair. If a plus-money win leaves you a free bet, the free bet converter turns it into cash value. Use code NRFI for 20% off your first month of OS Pro.
Wednesday's Full First-Inning Board
| Game (ET) | NRFI / YRFI | Away SP (clean 1st, L10) | Home SP (clean 1st, L10) | Team YRFI (Away / Home) | Park YRFI |
|---|---|---|---|---|---|
| Mariners At Brewers (7:40) | -145 / +138 | Logan Gilbert (7/10) | Dustin May (8/10) | 52% / 47% | Am Fam 52% |
| Padres At Mets (1:10) | -109 / +106 | Michael King (8/10) | Robert Stock (2/3*) | 39% / 50% | Citi Field 50% |
| D-Backs At Red Sox (4:10) | -127 / +125 | Brandon Pfaadt (9/10) | Payton Tolle (6/10) | 56% / 52% | Fenway 53% |
| Athletics At Royals (7:40) | -104 / +100 | TBD | TBD | 54% / 50% | Kauffman 53% |
| Dodgers At Rockies (8:40) | +138 / -145 | Roki Sasaki (8/10) | Kyle Freeland (6/10) | 49% / 64% | Coors 74% |
| Tigers At Pirates (12:35) | -119 / +117 | Jackson Jobe (1/2*) | Paul Skenes (7/10) | 48% / 47% | PNC 49% |
| Giants At Guardians (6:40) | -127 / +127 | Matt Wilkinson (0 starts*) | Parker Messick (8/10) | 47% / 42% | Progressive 44% |
| Marlins At Phillies (6:05) | -103 / +102 | Sandy Alcantara (10/10) | Aaron Nola (5/10) | 43% / 52% | Citizens Bank 58% |
| Braves At Twins (1:40) | +103 / -104 | AJ Smith-Shawver (1/1*) | Taj Bradley (5/10) | 50% / 58% | Target Field 50% |
| Blue Jays At Rays (6:40) | -118 / +115 | Max Scherzer (5/10) | Drew Rasmussen (9/10) | 48% / 48% | Tropicana 48% |
| Nationals At Rangers (8:05) | -111 / +102 | Cade Cavalli (9/10) | Kumar Rocker (6/10) | 53% / 61% | Globe Life 67% |
| Angels At Astros (8:10) | -105 / -105 | Walbert Ureña (9/10) | Ethan Pecko (0 starts*) | 52% / 57% | Daikin 54% |
| Cardinals At Reds (6:40) | -113 / +105 | Matthew Liberatore (5/10) | Chase Burns (9/10) | 46% / 50% | Great American 46% |
| White Sox At Cubs (2:20) | -115 / +106 | Sean Newcomb (2/2*) | Clay Holmes (8/10) | 56% / 46% | Wrigley 55% |
| Yankees At Orioles (6:35) | +102 / -116 | Will Warren (6/10) | Chris Bassitt (6/10) | 50% / 44% | Camden 33% |
*Fewer than 10 starts this season (small sample); "0 starts" = no starts in the 2026 game log.
Rate stats: a clean first is a start with no first-inning run allowed; team and park YRFI rates are the share of games with a first-inning run by either side (~50% league average). Trends describe what has happened; prices move by first pitch. Board analysis, not a wager directive. 21+, legal states only.
FAQ
What are the best NRFI picks today, Wednesday, August 19? Eight of the board's 30 sides price past fair. The three biggest edges are all YRFI: Mariners-Brewers +138 (true +131), D-backs-Red Sox +125 (true +121) and Padres-Mets +106 (true +102). The quiet-side spot I trust most is Marlins-Phillies NRFI -103 (true -104), behind Sandy Alcantara's 10 straight clean firsts. The rest grade at or below fair: reads to shop, not chase.
What do NRFI and YRFI mean? NRFI ("no runs first inning") cashes if neither team scores in the first; YRFI ("yes runs first inning") cashes if either team does. It's a single-inning bet on both starters and both lineups' top thirds.
Where can I shop first-inning odds? The OddsShopper first-inning Odds Screen lists NRFI/YRFI prices across 100-plus books, and OS Pro's no-vig pricing shows the "true" line next to each so you can find the best number.
