Philadelphia Phillies vs Seattle Mariners Picks and Prediction for Monday August 24, 2026

The Philadelphia Phillies travel to T-Mobile Park in Seattle, Washington, to face the Seattle Mariners on Monday, August 24, 2026. First pitch is scheduled for 9:40 PM ET, with MLB.TV carrying the game. Philadelphia enters at 72-58 overall and 35-28 on the road, while Seattle is 62-68 overall and 35-29 at home. The Phillies have won five straight games from the supplied recent results and are riding one of their strongest stretches of the season, while Seattle has won three of its last five. At the time of this writing the odds were not released. Bettors looking for more daily baseball analysis can also check out our free MLB picks.

Starting Pitchers

Philadelphia is expected to start Zack Wheeler, who enters at 10-4 with a 2.92 ERA and a 1.01 WHIP across 120.1 innings. Wheeler has allowed only 88 hits while striking out 144 and walking 33, with 15 home runs surrendered. Seattle had not announced its starter at the time of this preview, creating some uncertainty on the home side. Based on the available information, Philadelphia enters with a substantial known advantage on the mound because of Wheeler's combination of run prevention, command and strikeout production.

Philadelphia Brings a Hot Streak to Seattle

The Phillies enter Monday at 72-58 and have been excellent recently, winning each of their last five completed games. Philadelphia's recent victories include scores of 12-3, 7-6, 4-1, 6-4 and 6-5, showing that the offense has been capable of winning both higher-scoring games and tighter contests.

Philadelphia is batting .243 as a team with a .314 on-base percentage and a .404 slugging percentage. The Phillies have scored 593 runs, collected 1,059 hits and hit 157 home runs. Their pitching staff owns a 4.11 ERA and 1.30 WHIP while recording 1,281 strikeouts and allowing opponents to bat .250.

The Phillies' recent offensive production is especially encouraging entering this matchup. Philadelphia has scored 35 runs over its last five games, averaging seven per contest during that stretch. Combined with the strong starting pitching matchup, that gives the visitors several paths to controlling the opener.

Seattle Looks to Use Its Home Field Advantage

Seattle enters Monday at 62-68 overall but has been considerably better at T-Mobile Park, where the Mariners are 35-29. They have won three of their last five games, including consecutive victories of 5-4 and 6-5, although that stretch also included a lopsided 22-0 defeat.

The Mariners are batting .230 with a .309 on-base percentage and a .375 slugging percentage. Seattle has scored 511 runs, collected 988 hits and hit 148 home runs. The pitching staff owns a 4.01 ERA and 1.23 WHIP while opponents are batting .248.

Seattle's team pitching numbers are slightly better than Philadelphia's overall, but the offensive gap favors the Phillies. Philadelphia has scored 82 more runs and carries advantages in batting average, on-base percentage and slugging percentage. Seattle's home record gives the Mariners some appeal, but they will need strong pitching to slow a Philadelphia lineup that enters in excellent recent form.

Philadelphia Phillies vs Seattle Mariners Picks and Prediction

Pick: Philadelphia Phillies Moneyline

Philadelphia is the preferred side because of its recent winning streak, stronger offensive production and significant known advantage in the starting pitching matchup. The Phillies have won five straight games while scoring 35 runs during that span, and their 593 season runs comfortably exceed Seattle's 511. Wheeler's 2.92 ERA, 1.01 WHIP and 144 strikeouts give Philadelphia a high-level starter for the opener, while Seattle's starter remains undecided, making the Phillies the more trustworthy side.

Final Pick: Philadelphia Phillies Moneyline

Pick: Under 8.5

Take the Under if the total is set at 8.5. Philadelphia's starter has been excellent at limiting baserunners and runs, and Seattle's season-long offensive numbers remain modest with a .230 batting average and .375 slugging percentage. The Mariners have also scored three runs or fewer in two of their last five, while T-Mobile Park has historically been a setting where strong pitching can matter. Philadelphia's recent offense is the main concern, but the starting pitching advantage gives the Under enough support at 8.5.

Final Pick: Under 8.5

This game preview was completed prior to game play on Monday.