MLB Preview · September 22, 2026

San Diego Padres at Los Angeles Dodgers: Prediction, Odds & Preview

SD 50-53at LAD 65-38·UNIQLO Field at Dodger Stadium·

DiamondIQ Model — Win Probability

SD39.9%60.1%LAD

The model leans LAD (60.1%). 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 head to UNIQLO Field at Dodger Stadium on September 22 carrying a 50-52 record into a matchup against a Los Angeles Dodgers club that has been one of the most dominant teams in baseball this season at 65-38. The DiamondIQ model's estimate gives the Dodgers a 59.9% win probability against San Diego's 40.1%, a gap that reflects both the raw record disparity and the home-field advantage baked into the v2 model's calibration. The model also incorporates a starting-pitcher quality gap via its PitchIQ component, though probable starters for both sides remain unannounced this far in advance. That piece of the puzzle will matter considerably once rosters confirm, and the spread between these two clubs in the standings makes this a genuinely consequential late-September contest for the Padres, who need to gain ground in a crowded race.

Because probable pitchers have not yet been named, the pitching picture is an open question on both sides. What the data does reveal is that both bullpens have been active recently, with the Dodgers carrying a BullpenIQ of 59 out of 100 and five relievers listed as fresh heading in, while San Diego's pen sits at 55 out of 100 with four fresh arms. Los Angeles closer Tanner Scott anchors their late-game options, while Mason Miller holds that role for the Padres. It is worth noting that San Diego's relief corps is carrying some meaningful absences, with Jason Adam, Jeremiah Estrada, and David Morgan all on the injured list, thinning the depth behind Miller. The Dodgers are dealing with their own pitching staff attrition, including Blake Snell and Bobby Miller both on the 60-day IL, which adds intrigue to which arms each club can actually deploy across a late-season series.

Forecast conditions at first pitch call for clear skies, 90 degrees, and a 10 mph wind blowing out to center field, a combination that historically inflates offensive output and favors power hitters on both rosters. The model leans toward Los Angeles in this early look, and with starters still to be determined, the single most important thing to monitor before first pitch is which pitchers each club ultimately names. The starter quality gap is an explicit input into the DiamondIQ model's 59.9-40.1 read, meaning that announcement could shift the model's lean meaningfully in either direction before the ball is ever thrown.

Analysis generated by DiamondIQ's model.

Forecast at First Pitch

90°FPartly cloudy
Wind 11 mph WSW · out to CF
Precip 0%

Injured List

SD
Miguel Andujar (DH)Injured 10-Day
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
LAD
Enrique Hernández (1B)Injured 10-Day
Blake Treinen (P)Injured 15-Day
Ben Casparius (P)Injured 60-Day
Blake Snell (P)Injured 60-Day
Bobby Miller (P)Injured 60-Day
Brusdar Graterol (P)Injured 60-Day
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