MLB Preview · August 17, 2026

San Diego Padres at New York Mets: Prediction, Odds & Preview

SD 48-50at NYM 41-58·Citi Field·

DiamondIQ Model — Win Probability

SD51.4%48.6%NYM

The model leans SD (51.4%). DiamondIQ model v2: season records, home-field advantage, the starting-pitcher quality gap (PitchIQ), and a calibration adjustment fit and validated on four seasons of backtest — plus live game state once underway.

The Matchup

The San Diego Padres carry a 48-48 record into Citi Field to face a New York Mets club sitting at 41-57, and that gap in the standings shapes how the DiamondIQ model reads this matchup. The model's estimate gives San Diego a 51.7% win probability against New York's 48.3%, a lean that reflects the Padres' seven-game edge in the win column even after the model weights home field in New York's favor. It is a slim margin, and the Mets' home-park advantage keeps this from being a lopsided projection, but the model favors the visitors heading into what shapes up as a competitive mid-August contest.

Because probable starters have not yet been named for either side, the pitching picture remains the central unknown in this early look. What the data does reveal is that San Diego carries a meaningful starting-pitcher quality advantage according to the model's PitchIQ component, and that edge is one of the primary reasons the Padres hold the lean despite playing on the road. The Padres' injury picture in the bullpen deserves attention, however: with a BullpenIQ of 56 out of 100 and five relievers already rated heavy on workload over the last three games, San Diego's backend depth behind closer Mason Miller could be tested if a starter exits early. The Mets' bullpen grades out at 52 out of 100, with one arm listed as likely unavailable, but four fresh arms give New York's relief corps slightly more flexibility heading into the game, with Devin Williams anchoring the ninth.

The forecast at Citi Field calls for clear skies at 77 degrees with a 12-mph SSE wind blowing out to center field and just 1% precipitation probability, conditions that are neutral to slightly favorable for offensive production given the wind direction. With first base occupied by a replacement for the injured Mark Vientos on the Mets' side and San Diego missing Samad Taylor in left field along with a collection of relief arms on the IL, roster depth on both sides will be worth monitoring once lineups and starters are formally announced. The most important variable to track as game day approaches is who gets the ball for each team: once the starters are confirmed, the PitchIQ gap the model is already pricing in will either widen or narrow, and that movement is likely to define which direction the 51.7-to-48.3 split shifts before first pitch.

Analysis generated by DiamondIQ's model.

Forecast at First Pitch

☁️78°FOvercast
Wind 14 mph SE · R→L
Precip 70%

Injured List

SD
Samad Taylor (LF)Injured 10-Day
David Morgan (P)Injured 15-Day
Jason Adam (P)Injured 15-Day
Jeremiah Estrada (P)Injured 15-Day
Lucas Giolito (P)Injured 15-Day
Randy Vásquez (P)Injured 15-Day
NYM
Mark Vientos (1B)Injured 10-Day
Austin Warren (P)Injured 15-Day
Clay Holmes (P)Injured 60-Day
Dedniel Núñez (P)Injured 60-Day
Justin Hagenman (P)Injured 60-Day
Luis Robert Jr. (CF)Injured 60-Day
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