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MLB Prop Bets: Boston Red Sox vs Tampa Bay Rays (May 9, 2026)

The Tampa Bay Rays (25-13) face the Boston Red Sox (17-22) at Fenway Park on Saturday at 4:10pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Nick Martinez is the probable pitcher for the Rays, while Payton Tolle is the probable pitcher for the Red Sox. The Red Sox are favored to win at -156, while the Rays are at +129. The total runs line is set at 7.5, with OVER at -110 and UNDER at -110.

  • The Rays (-168) have a 23-15 Run Line record this season, while the Red Sox (+139) hold a record of 14-25.
  • The Rays have a 17-18-3 O/U record this season (meaning 17 games have gone over the total runs line, 18 have gone under and three have resulted in a push). The Red Sox have a 19-19-1 O/U record.

Scoring Insights

  • The Rays are averaging 4.4 runs per game this season (14th in the league). Comparatively, the Red Sox are averaging only 4.0 (T25th).
  • In the field, the Rays are allowing only 3.9 runs per game this season (5th in the league), while the Red Sox are allowing an average of 4.2 runs (11th).

Let's take a look at how these teams perform in some other key statistical areas.

Batting Insights:

Batting Average

  • Looking at their batting averages this season, the Rays are at .254 (ranking 5th in the Major leagues), while the Red Sox are batting .234 (20th).

Home Runs

  • In terms of total home runs this season, the Red Sox have hit 29 (T27th in the Major Leagues). Meanwhile, the Rays have managed 31 (T25th).

Runs Batted In

  • Finally, looking at their runs batted in, the Rays have recorded 157 RBIs to rank 18th in the MLB this season. Comparatively, the Red Sox have recorded 148 RBIs to rank 25th.

Pitching Insights:

Earned Run Average

  • The Red Sox have an earned run average of 4.00 this season (13th in the Majors), while The Rays have an ERA of 3.51 (5th).

Strikeouts

  • Turning our attention to total strikeouts, the Rays have recorded 294 this season, ranking T27th in the MLB. Meanwhile, the Red Sox rank 20th for total strikeouts, recording 313.

Opponent Batting Average

  • Opponents are batting an average of .244 against the Red Sox this season (18th in the Major Leagues). Comparatively, the Rays' opponents are at .219 (3rd).

First Innings Moneyline

  • Here are their first innings moneyline records in 2026.
    Total Home Road Favorite Underdog Neutral Last 10
    Rays 7-8-23 3-5-10 4-3-13 4-6-13 3-2-10 0-0-0 1-2-7
    Red Sox 4-11-24 1-3-14 3-8-10 1-7-18 3-4-6 0-0-0 2-1-7

Lead After Three Innings

  • Here are their records after the first three innings in 2026.
    Total Home Road Favorite Underdog Neutral Last 10
    Rays 15-14-9 8-5-5 7-9-4 11-9-3 4-5-6 0-0-0 2-4-4
    Red Sox 13-14-12 8-5-5 5-9-7 8-8-10 5-6-2 0-0-0 4-3-3

NRFI/YRFI

The NRFI market is paying -135 and the YRFI is paying +105.

  • The NRFI is 22-16 in Rays games this season. The Red Sox have a 23-16 NRFI record.

Last Time They Met

The Red Sox recorded a 2-0 victory over the Rays at Fenway Park yesterday. Wilyer Abreu went yard en route to that victory, hitting a home run to go with an RBI.