St. Louis Cardinals vs Philadelphia Phillies Picks and Prediction for Sunday August 23, 2026

The St. Louis Cardinals will visit the Philadelphia Phillies at Citizens Bank Park in Philadelphia, Pennsylvania, on Sunday, August 23, 2026. First pitch is scheduled for 1:35 p.m. ET, with coverage available on MLB.TV. St. Louis enters the matchup at 66-64 overall and 34-30 on the road, while Philadelphia is 71-58 overall with a 36-30 home record. The Phillies have been the hotter club recently, carrying a seven-game winning streak into the weekend series. At the time of this writing the odds were not released. Bettors looking over Sunday's baseball card can also check out our free MLB picks for more predictions and analysis.

Starting Pitchers

St. Louis is expected to start Kyle Leahy, who enters at 10-4 with a 3.24 ERA and 1.31 WHIP over 122.1 innings. He has allowed 125 hits while recording 111 strikeouts against 35 walks and has surrendered 12 home runs. Philadelphia counters with Cristopher Sanchez, who owns a 16-4 record with a 2.51 ERA and 1.22 WHIP across 161.2 innings. Sanchez has struck out 187 hitters while issuing only 38 walks and allowing 13 home runs. Philadelphia owns the stronger statistical starting-pitching profile here, particularly in ERA, WHIP and strikeout production.

Cardinals Looking for More Consistency

St. Louis comes into this game just above .500 at 66-64 and has been competitive away from home with a 34-30 road record. The Cardinals have split their most recent five games at 2-3, with three of those losses coming by a single run. Their latest setback was a 7-6 extra-inning loss in Philadelphia, showing that they have remained competitive even when the final result has gone against them.

The Cardinals are hitting .241 as a team with 578 runs, 1,052 hits and 135 home runs. Their .318 on-base percentage is slightly better than Philadelphia's, although their .382 slugging percentage trails the Phillies by a noticeable margin. On the pitching side, St. Louis owns a 4.06 team ERA and 1.33 WHIP while opponents are batting .251 against them.

The biggest concern for St. Louis is its limited power production compared with Philadelphia. The Cardinals have hit 20 fewer home runs and carry a significantly lower slugging percentage. Their ability to stay competitive has been evident, but generating enough extra-base damage against a stronger starting pitcher could become the defining issue in this matchup.

Phillies Carry Momentum at Home

Philadelphia enters Sunday's matchup at 71-58 and sits four games behind Atlanta in the National League East. The Phillies have gone 36-30 at Citizens Bank Park and have been one of baseball's hottest teams recently, winning seven consecutive games. They have won each of their last five contests, including four straight home victories before the weekend finale.

The Phillies are batting .242 with 581 runs, 1,044 hits and 155 home runs. Their .402 slugging percentage gives them the stronger power profile in this matchup, while their .313 on-base percentage is slightly below St. Louis. Philadelphia's pitching staff owns a 4.12 ERA and 1.31 WHIP, but the club has accumulated 1,272 strikeouts, considerably more than the Cardinals' 1,006.

Philadelphia's combination of recent momentum, home-field advantage and superior power production gives it several important edges. The overall team ERA numbers are close, but Sunday's projected starting-pitching matchup favors the Phillies, and that becomes particularly important against a St. Louis lineup that has not produced the same level of power.

St. Louis Cardinals vs Philadelphia Phillies Picks and Prediction

Pick: Philadelphia Phillies Moneyline

Philadelphia is the preferred side in this matchup. The Phillies enter with the better overall record, a seven-game winning streak and a clear advantage in the projected starting-pitching matchup. St. Louis has kept several recent games close, but Philadelphia's stronger power numbers and current form make the home club the more trustworthy option. The Phillies have also won their last five overall, and the combination of momentum and superior starting pitching makes Philadelphia the side to back.

Pick: Under 8.5

The starting-pitching matchup points toward a lower-scoring game than the recent series opener. Both projected starters enter with ERAs comfortably below the league-average range represented by their respective team staffs, while each has done a good job limiting home runs. Philadelphia has the stronger offensive power numbers, but neither team owns an especially high batting average. If the total is set at 8.5, the Under offers the better value based on the starting pitching.

Side Pick: Philadelphia Phillies Moneyline

Total Pick: Under 8.5

Game Preview completed prior to play on Saturday.