Guardians vs Mariners Prediction 6/15/25 MLB Picks Today

The Cleveland Guardians are visiting the Seattle Mariners on Sunday, June 15^th at the T-Mobile Park in the third game of this series, with the Mariners having a 2-0 lead. We will look at this from a betting perspective and determine the best bets for this game. Here’s a Guardians vs Mariners Prediction. We will examine:

The Seattle Mariners’ recent form and player performance

The Cleveland Guardians’ recent form and player performance

Recent betting trends and streaks involving the Seattle Mariners

Recent betting trends and streaks involving the Cleveland Guardians

Recent betting trends in games played between the Cleveland Guardians vs Seattle Mariners

A summary that ties it all together and produces a favorable betting outcome for the Cleveland Guardians vs Seattle Mariners game

Seattle Mariners Preview

The Seattle Mariners have a 35-34 record this season and are sitting in second place in the AL West. The Mariners have an 18-17 home record and 37-28 in over/under. They are coming off a 4-3 home victory over the Guardians and have back-to-back wins. Over is 4-1 in their last 5 games, and they are playing the Red Sox and the Cubs next.

The Mariners have a .244 batting average this season, a .323 OBP, and a .399 Slugging percentage. Seattle’s pitching staff has a 4.02 ERA and 1.32 WHIP. Julio Rodriguez leads the Mariners in hits with 74, while Cal Raleigh leads the team both in RBI with 54 and in home runs with 26. J.P. Crawford is the team’s best hitter with a .295 batting average.

Emerson Hancock (R) is the projected starting pitcher for the Mariners, and he has a 2-2 record, 5.04 ERA, and 1.50 WHIP. He has been terrible at home with a 7.54 ERA across five home starts, and he has given up 2+ runs in three of his last four starts. This will be his first career start against the Guardians.

Cleveland Guardians Preview

The Cleveland Guardians have a 35-34 record this season and are sitting in third place in the AL Central. The Guardians have a 16-19 road record and are 33-33 in over/under. They are coming off a 3-4 road defeat by the Mariners, and are 2-7 in their last 9 games. Over is 4-1 in their last 5 games, and they are playing the Giants and the Athletics next.

The Guardians have a .233 batting average this season, a .306 OBP, and a .377 Slugging percentage. Cleveland’s pitching staff has a 3.95 ERA and 1.38 WHIP. Jose Ramirez leads the Guardians with 83 hits and has a team-high .329 batting average, while leading the team in home runs, with 13. Carlos Santana leads the team in RBI, with 34.

Luis Ortiz (R) is the projected starting pitcher for the Guardians, and he has a 3-7 record, 4.26 ERA, and 1.45 WHIP. He has been weaker on the road with a 5.40 ERA across seven road starts, and in his previous start, he gave up 4 runs in 4.2 innings pitched against the Reds. In his only previous career start against the Mariners back in 2023, he gave up 3 runs in 5 innings pitched.

Why the Seattle Mariners will win

• The home team has won seven of the Mariners’ last eight games.
• The Guardians have lost each of their last five day games against AL West opponents following a road loss.
• The Mariners have covered the run line in 10 of their last 11 day games against American League opponents following a home win.
• The Guardians have failed to cover the run line in four of their last five games as underdogs against AL West opponents.
• The Mariners have won the first inning in three of their last four games against American League opponents.
• The Mariners have led after 3 innings in seven of their last eight Sunday games against the Guardians.
• The Guardians have trailed after 5 innings in each of their last six road day games.

Why the Cleveland Guardians will win

• The Mariners have lost four of their last five games as favorites against the Guardians following a home win.
• The underdogs have won 12 of the Guardians’ last 16 games at T-Mobile Park.
• The Mariners have failed to cover the run line in each of their last 14 games as favorites after playing the previous day.
• The underdogs have covered the run line in nine of the Mariners’ last 10 games at T-Mobile Park.
• The Guardians have led after 3 innings in three of their last four day games.
• The Guardians have led after 5 innings in three of their last four day games against the Mariners.

Total Runs Facts

• Each of the last six games between the Guardians and Mariners have gone OVER the total runs line.
• Five of the Guardians’ last six road games against AL West opponents have gone OVER the total runs line.
• The ‘Inning 1 UNDER 0.5 runs’ market has hit in each of the Guardians’ last nine Sunday games.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in each of the last six day games between the Guardians and Mariners.

Matchup/League Facts

• The Mariners rank T28th in the league for doubles this season (92).
• The Mariners rank 4th in the league for steals this season (69).
• The Guardians rank 27th in the league for hits this season (524).
• The Guardians rank 26th in the league for doubles this season (95).

Guardians vs Mariners Prediction

The Mariners have won both games of this series with a combined 11-5 score, and are 3-2 in their last 5 meetings in Seattle. Over is 10-1-1 in their last 12 meetings.

In this Guardians vs Mariners Prediction, the Mariners are coming as -115 home favorites. Both teams have exactly the same record and similar home/away splits. Both pitchers have been terrible this season, with a combined 9.30 ERA, and their home/away splits are even worse, with a combined 12.94 ERA. Both teams are also better against righties, averaging 8.7 runs combined against right-handed pitching. The previous two games of this series had gone over the total, and over is also a strong 10-1-1 in their last 12 head-to-head meetings. Take the over 7.5 runs in this one.