Best Bets & Picks for Phillies vs Red Sox on May 13

• The Boston Red Sox battle the Philadelphia Phillies, who are road favorites
• Should you bet on Kyle Schwarber to go deep against his former squad?
• Make sure you keep scrolling to see predictions, the latest odds, and injury reports

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Philadelphia Phillies vs Boston Red Sox Predictions & Picks

The Philadelphia Phillies (20-22) are continuing their series against the Boston Red Sox (17-24) at Fenway Park on May 13, 2026, at 6:45 PM ET. The game will be broadcast regionally. Boston enters as the home favorite, looking to rebound after dropping a 2-1 decision to Philadelphia in the previous matchup.

In that game, Kyle Schwarber hit a crucial home run, and Zack Wheeler delivered a strong start. With official moneyline and spread edges tight, I am turning to the player prop markets to find the most mathematical value for this evening’s contest.

Pick 1: Kyle Schwarber to hit a home run (+270 at DraftKings)

My top player prop is Kyle Schwarber to hit a home run at +270 on DraftKings. He has hit 17 home runs this season, averaging 0.405 per game. His power metrics are elite, featuring a .611 slugging percentage, a .968 OPS, and a 92.9 mph average exit velocity. He faces a pitching staff that yields 1.303 home runs per nine innings.

Pick 2: Sonny Gray under 4.5 strikeouts (-138 at Caesars Sportsbook)

I am also playing Sonny Gray under 4.5 strikeouts at -128 on Caesars. He is managing just 4.82 strikeouts per nine innings across 28.0 frames. To cash the over, he would need to pitch deep into the sixth inning, which defies his season averages.

Pick 3: Andrew Painter over 4.5 strikeouts (+120 at BetMGM)

Conversely, I like Andrew Painter over 4.5 strikeouts at +120 on BetMGM. Painter generates 8.27 strikeouts per nine innings.

Odds as of May 13, 2026, at 3:10 PM ET from BetMGM, Caesars Sportsbook, and DraftKings

Starting Pitchers & Team Statistics

The pitching matchup features a struggling prospect searching for consistency against a seasoned veteran. Always stay up to date on MLB probable pitchers. Here is how both starters compare based on their season-long metrics.

Painter carries a bloated 7.81 ERA and a 1.88 WHIP. However, his 4.86 FIP suggests he has suffered from exceptionally poor batted-ball luck. His strikeout rate recently jumped to 8.27 K/9, giving him decent momentum despite averaging only 4.61 innings per start.

Gray limits damage efficiently, holding a 3.54 ERA and a 1.29 WHIP. He relies heavily on pitch-to-contact outs rather than strikeouts, punching out a meager 4.82 batters per nine innings. Like his counterpart, he rarely pitches deep, averaging 4.67 innings per start.

When evaluating both offenses, situational statistics reveal why these clubs are struggling to score consistently.

Both lineups are in a severe slump. The Red Sox are tied for the worst home scoring output in baseball, plating 2.85 runs per game. The Phillies rank dead last in away batting average (.210).

However, Philadelphia ranks third in away average exit velocity (89.5 mph), suggesting positive regression is looming. Boston struggles to make hard contact altogether, ranking 25th at 87.2 mph. This discrepancy strongly supports backing Schwarber’s raw power tonight. Check out how Fenway Park could impact this game with our MLB parks factor page.

Here are a few situational betting trends that stand out for this matchup:

• Philadelphia is 7-3 straight up over their last 10 games (70% win rate).
• The Phillies have won 75% of their last 10 games when listed as the favorite.
• The Under has hit in 60% of Boston’s last 10 games.
• Boston is 4-9 (30.8%) when playing as an underdog this season.

Phillies vs Red Sox Odds & Betting Splits

Odds as of May 13, 2026, at 3:15 PM ET from BetMGM, Caesars Sportsbook, and DraftKings

Boston enters as a standard home moneyline favorite at -130 according to the most up-to-date MLB odds. Despite both teams struggling to generate consistent offense, the total sits at a moderately high 9 runs. On the runline, bettors must pay a -130 premium for the underdog Phillies.

The total opened at 9 runs and remained stagnant, while the Under ticket share increased by 11% throughout the morning. Meanwhile, the runline saw notable adjustment, with the Red Sox drifting to +158 and the Phillies becoming more expensive at -190.

The MLB public betting percentages back the home team on the runline, with 79% of tickets and 87.0% of the handle supporting Boston. On the moneyline, the Red Sox command 60.2% of tickets and 57.6% of the money, showing a unified front without a distinct sharp divide.

The Over draws 71.5% of the bets and 69% of the handle. Because the public expects a high-scoring environment, this correlates nicely with my Schwarber home run prop, as his bat will be necessary to push this total over 9 runs.

Injury Report & Impact

Injuries heavily impact my betting perspective tonight. Boston is navigating a wave of absences, depleting its rotation and everyday lineup. Conversely, Philadelphia is relatively healthy, with its injuries contained strictly to the bullpen.

Boston’s injuries explain its scoring struggles at home. With key infielders out and a depleted outfield, the lineup is noticeably thin. This lack of firepower makes my Painter over 4.5 strikeouts prop highly appealing, as Boston will struggle to extend at-bats.

On the mound, Boston’s decimated rotation forces a heavy reliance on Gray. While Philadelphia’s lineup is intact, its bullpen is compromised. Because both starters average under five innings, these taxed relief units will carry a heavy workload, opening the door for late-game scoring.