MLB Preview · August 19, 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 48-49 record into Citi Field on August 19 to face a New York Mets club that sits at 41-57, and the DiamondIQ model's estimate reflects that contrast in the standings. With San Diego holding a seven-game edge over New York in the win column, the model leans toward the Padres, projecting a 51.4% win probability against the Mets' 48.6%. It is worth noting that the model's v2 framework factors in team records, home field, a starting-pitcher quality gap through its PitchIQ component, and a backtest-fit calibration, while not yet accounting for bullpen state, lineup construction, or weather conditions. Even with home field providing the Mets some underlying support, the gap in overall performance this season is enough for the model to favor the visiting side.

Because probable starters have not yet been announced for this advance look, the pitching component of the equation remains an open variable. What is known on the relief side is that both clubs enter this series with matching BullpenIQ scores of 52 out of 100, suggesting comparable bullpen health and effectiveness at this snapshot. San Diego shows three relievers fresh and five carrying heavy workloads over the last three games, with Mason Miller available as the closer. New York counters with four fresh arms, three heavy, and one pitcher likely unavailable, with Devin Williams holding down the closer role. The bullpen depth question is further complicated for both sides by their respective injury lists: the Padres are without four pitchers on the IL including Lucas Giolito and Jason Adam, while the Mets are missing Clay Holmes and several other arms on 60-day stints.

Conditions at Citi Field project to be favorable for offense, with clear skies, a temperature of 77 degrees, and a 12 mph wind blowing out to center field at zero percent precipitation probability. That wind direction is worth monitoring, as it can extend well-struck balls to the deepest part of the park. The single most consequential unknown heading into this matchup is who takes the mound for each side, given that the PitchIQ component is already embedded in the model's lean toward San Diego. Once probable starters are confirmed, that gap — or potential narrowing of it — will be the sharpest lens through which to reassess how the DiamondIQ model's current estimate holds up.

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
Follow it live in the Game Center
Live win probability, pitch-by-pitch, and the model updating in real time.
Open Game Center →