Miami Marlins vs Philadelphia Phillies Picks and Prediction for Tuesday August 18, 2026

The Miami Marlins travel to Citizens Bank Park in Philadelphia, Pennsylvania, for a National League East matchup against the Philadelphia Phillies on Tuesday, August 18. First pitch is scheduled for 6:40 p.m. ET, with coverage available on ESPN Unlimited and MLB.TV. Miami enters at 64-61 overall and 26-36 on the road, while Philadelphia is 67-58 overall and 32-30 at home. Both clubs are playing well, with the Marlins winning two straight and the Phillies riding a three-game winning streak. ESPN's matchup predictor gives Philadelphia a 64.3% chance of winning. At the time of this writing the odds were not released. Check out our free MLB picks for more baseball predictions and betting analysis.

Starting Pitchers

Miami has not announced a probable starting pitcher for Tuesday's matchup. Philadelphia is scheduled to start Zack Wheeler, who enters with a 10-4 record, 2.89 ERA, and 1.00 WHIP through 115.1 innings. Wheeler has allowed just 86 hits and 14 home runs while recording 137 strikeouts against 29 walks. With Miami's starter still undecided, Philadelphia has the only established starting-pitching profile available for this matchup, and Wheeler's numbers provide the Phillies with a significant advantage entering Tuesday.

Miami Looks to Continue Its Road Momentum

Miami enters Tuesday at 64-61 overall but has struggled away from home with a 26-36 road record. The Marlins have won three of their last five games, including consecutive road victories by scores of 8-4 and 7-1. Those performances followed a 1-0 loss, showing a considerable offensive turnaround over the final two games of the weekend.

The Marlins are batting .250 this season with 550 runs, 1,036 hits, and 128 home runs. They have a .326 on-base percentage and .403 slugging percentage. Miami's pitching staff owns a 3.92 ERA and 1.24 WHIP while holding opponents to a .231 batting average.

Miami's ability to reach base is one of its biggest advantages in this matchup. The Marlins own the better team batting average and on-base percentage, while their pitching staff has also produced better season-long numbers than Philadelphia's staff. The problem is their 26-36 road record and the difficult scheduled pitching matchup. Miami will need its recent offensive production to continue against one of Philadelphia's strongest starters.

Philadelphia Carries a Three-Game Winning Streak

Philadelphia comes into Tuesday at 67-58 overall and 32-30 at Citizens Bank Park. The Phillies have won three consecutive games and three of their last five, scoring seven or more runs in each victory. They won their most recent game 7-5 after posting consecutive victories by scores of 9-1 and 7-1.

The Phillies are hitting .239 with 558 runs, 1,002 hits, and 154 home runs. Philadelphia owns a .310 on-base percentage and .401 slugging percentage. Its pitching staff has posted a 4.16 ERA and 1.31 WHIP while opponents are batting .250.

Power gives Philadelphia an important offensive advantage. The Phillies have hit 154 home runs compared with Miami's 128 and have scored slightly more runs despite having the lower batting average and on-base percentage. Philadelphia also has the more favorable scheduled pitching situation for Tuesday. The season series is tied 5-5, so neither team has been able to establish a consistent advantage head-to-head.

Miami Marlins vs Philadelphia Phillies Picks and Prediction

Pick: Philadelphia Phillies Moneyline

Philadelphia is the preferred side in Tuesday's matchup. Miami has several favorable season-long team statistics, but the Phillies enter on a three-game winning streak and have a much better home record than Miami's 26-36 road mark. The biggest difference is the starting pitching situation. Philadelphia has an established starter carrying a 2.89 ERA and 1.00 WHIP, while Miami's starter remains undecided. That uncertainty combined with Philadelphia's recent offensive production makes the Phillies the moneyline selection.

Pick: Under 8.5

Take the under if the total is set at 8.5. Philadelphia's recent offensive surge creates some risk, but its scheduled starter has been difficult to score against throughout the season. Miami has also hit only 128 home runs, considerably fewer than Philadelphia, and the Marlins have been involved in several low-scoring games recently. With Philadelphia holding the strongest starting-pitching advantage in the matchup, Under 8.5 is the preferred total. A number of 7.5 would make the under considerably less attractive.