MLB Prop Bets: Seattle Mariners vs Cleveland Guardians (June 15, 2025)

The Cleveland Guardians (35-34) face the Seattle Mariners (35-34) at T-Mobile Park on Sunday at 4:10pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Luis Ortiz is the probable pitcher for the Guardians, while Emerson Hancock is the probable pitcher for the Mariners. The Mariners are favored to win at -113, while the Guardians are at -108. The total runs line is set at 7.5, with OVER at -121 and UNDER at -101.

  • The Guardians (+155) have a 35-34 Run Line record this season, while the Mariners (-190) hold a record of 30-39.
  • The Guardians have a 33-33-3 O/U record this season (meaning 33 games have gone over the total runs line, 33 have gone under and three have resulted in a push). The Mariners have a 37-28-4 O/U record.

Scoring Insights

  • The Guardians are averaging 3.9 runs per game this season (24th in the league). Comparatively, the Mariners are averaging +0.5 more at 4.4 runs (12th).
  • In the field, the Guardians are allowing 4.2 runs per game this season (16th in the league), while the Mariners are allowing an average of 4.5 runs (21st).

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 Guardians are at .233 (ranking 24th in the Major leagues), while the Mariners are batting .244 (19th).

Home Runs

  • In terms of total home runs this season, the Mariners have hit 89 (7th in the Major Leagues). Meanwhile, the Guardians have managed 72 (18th).

Runs Batted In

  • Finally, looking at their runs batted in, the Guardians have recorded 255 RBIs to rank 24th in the MLB this season. Comparatively, the Mariners have recorded 292 RBIs to rank 13th.

Pitching Insights:

Earned Run Average

  • The Mariners have an earned run average of 4.02 this season (19th in the Majors), while The Guardians have an ERA of 3.95 (17th).

Strikeouts

  • Turning our attention to total strikeouts, the Guardians have recorded 580 this season, ranking 15th in the MLB. Meanwhile, the Mariners rank T20th for total strikeouts, recording 561.

Opponent Batting Average

  • Opponents are batting an average of .256 against the Mariners this season (24th in the Major Leagues). Comparatively, the Guardians' opponents are at .253 (22nd).

First Innings Moneyline

  • Here are their first innings moneyline records in 2025.
    Total Home Road Favorite Underdog Neutral Last 10
    Guardians 11-11-47 7-5-22 4-6-25 4-4-17 7-7-30 0-0-0 2-1-7
    Mariners 21-14-34 7-6-22 14-8-12 14-10-20 7-4-14 0-0-0 4-1-5

Lead After Three Innings

The Guardians are -110 to lead after three innings, while the Mariners are -121.

  • Here are their records after the first three innings in 2025.
    Total Home Road Favorite Underdog Neutral Last 10
    Guardians 21-26-22 12-10-12 9-16-10 8-9-8 13-17-14 0-0-0 5-1-4
    Mariners 29-19-21 16-7-12 13-12-9 20-9-15 9-10-6 0-0-0 3-3-4

NRFI/YRFI

The NRFI market is paying -121 and the YRFI is paying -110.

  • The NRFI is 44-25 in Guardians games this season. The Mariners have a 30-39 NRFI record.

Last Time They Met

The Mariners recorded a 4-3 victory over the Guardians at T-Mobile Park yesterday. J.P. Crawford led the way to that victory, hitting a home run.