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MLB Prop Bets: St. Louis Cardinals vs Boston Red Sox (April 12, 2026)

The Boston Red Sox (5-9) face the St. Louis Cardinals (8-6) at Busch Stadium on Sunday at 2:15pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Brayan Bello is the probable pitcher for the Red Sox, while Andre Pallante is the probable pitcher for the Cardinals. The Red Sox are favored to win at -126, while the Cardinals are at +104. The total runs line is set at 8.5, with OVER at -120 and UNDER at +100.

  • The Red Sox (+129) have a 4-10 Run Line record this season, while the Cardinals (-156) hold a record of 8-6.
  • The Red Sox have a 7-7-0 O/U record this season (meaning seven games have gone over the total runs line and seven have gone under). The Cardinals also have a 7-7-0 O/U record.

Scoring Insights

  • The Red Sox are averaging 3.8 runs per game this season (25th in the league). Comparatively, the Cardinals are averaging +0.7 more at 4.5 runs (9th).
  • In the field, the Red Sox are allowing 4.2 runs per game this season (16th in the league), while the Cardinals are allowing an average of 5.1 runs (26th).

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 Red Sox are at .226 (ranking 17th in the Major leagues), while the Cardinals are batting .224 (18th).

Home Runs

  • In terms of total home runs this season, the Cardinals have hit 14 (T9th in the Major Leagues). Meanwhile, the Red Sox have managed 9 (T27th).

Runs Batted In

  • Finally, looking at their runs batted in, the Red Sox have recorded 51 RBIs to rank T24th in the MLB this season. Comparatively, the Cardinals have recorded 62 RBIs to rank T8th.

Pitching Insights:

Earned Run Average

  • The Cardinals have an earned run average of 4.82 this season (28th in the Majors), while The Red Sox have an ERA of 3.90 (17th).

Strikeouts

  • Turning our attention to total strikeouts, the Red Sox have recorded 119 this season, ranking 18th in the MLB. Meanwhile, the Cardinals rank 30th for total strikeouts, recording 87.

Opponent Batting Average

  • Opponents are batting an average of .262 against the Cardinals this season (29th in the Major Leagues). Comparatively, the Red Sox's opponents are at .236 (17th).

First Innings Moneyline

  • Here are their first innings moneyline records in 2026.
    Total Home Road Favorite Underdog Neutral Last 10
    Red Sox 1-4-9 1-0-5 0-4-4 0-3-9 1-1-0 0-0-0 1-2-7
    Cardinals 2-2-10 1-0-7 1-2-3 0-1-1 2-1-9 0-0-0 1-2-7

Lead After Three Innings

The Red Sox are -120 to lead after three innings, while the Cardinals are -110.

  • Here are their records after the first three innings in 2026.
    Total Home Road Favorite Underdog Neutral Last 10
    Red Sox 4-5-5 4-1-1 0-4-4 3-4-5 1-1-0 0-0-0 4-3-3
    Cardinals 5-4-5 4-1-3 1-3-2 1-1-0 4-3-5 0-0-0 3-3-4

NRFI/YRFI

The NRFI market is paying -120 and the YRFI is paying -110.

  • The NRFI is 9-5 in Red Sox games this season. The Cardinals also have a 9-5 NRFI record.

Last Time They Met

The Red Sox recorded a 7-1 victory over the Cardinals at Busch Stadium yesterday. Willson Contreras went yard en route to that victory, hitting a home run to go with 3 RBIs.