Mariners vs Red Sox Prediction - MLB Picks 5/17/23

Boston Red Sox (23-20) vs Seattle Mariners (21-21)

Game Info: Wednesday, May 17, 2023 at 7:10 pm (Fenway Park)

Brayan Bello (2-1) (5.01) vs Marco Gonzales (3-0) (4.42)

Betting Odds: Boston Red Sox -120 / Seattle Mariners +100 --- Over/Under: 9.5 Click Here for the Latest Odds

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The Seattle Mariners will play the Boston Red Sox in Game 3 of their series on Wednesday night at Fenway Park in Boston, Massachusetts. 

Mariners Preview

The Seattle Mariners are 21-21 this season and they have won three of their last five games. Seattle won Game 1 in this series by a score of 10-1 on Monday night. The Seattle pitching staff has a 3.34 ERA, a 1.16 WHIP, and a .230 opponent batting average this season. The Mariners offense has scored 188 runs with a .229 batting average and a .307 on base percentage. Jarred Kelenic is batting .283 with eight home runs and 21 RBI’s for the Mariners. The projected starting pitcher for Seattle is Marco Gonzales, who is 3-0 with a 4.42 ERA and a 1.39 WHIP over 36.2 innings pitched this year. 

Red Sox Preview

The Boston Red Sox are 23-20 this season and they have lost six of their last eight games. Boston won Game 2 of this series by a score of 9-4 on Tuesday night. The Boston pitching staff has a 5.07 ERA, a 1.38 WHIP, and a .265 opponent batting average. The Red Sox offense has scored 236 runs with a .268 batting average and a .339 on base percentage this year. Masataka Yoshida is batting .301 with six home runs and 27 RBI’s for the Red Sox. The projected starting pitcher for Boston is Brayan Bello, who is 2-1 with a 5.01 ERA and a 1.59 WHIP over 23.1 innings pitched this season.


Seattle is 7-2 in their last 9 road games and 10-5 in their last 15 games. The under is 7-3 in Seattle’s last 10 Wednesday games. Boston is 6-13 in their last 19 Wednesday games and 1-4 in their last 5 games. The over is 8-1 in Boston’s last 9 home games. The over is 22-5 in these two teams last 27 head to head meetings.


Both teams have won a game so far in this series, but Seattle is trending in the better direction. Boston has struggled in recent games and their pitching staff has not been good. The Red Sox will start Brayan Bello in this game, who started the year poorly, but has only allowed five earned runs over his last 16.0 innings of work. Seattle is starting Marco Gonzales, who has allowed 10 earned runs over his last 15.0 innings pitched. We have seen two high scoring games to start this series and I think we will see another one here. I am taking the over. 

The pick in this article is the opinion of the writer, not a PickDawgz site consensus.

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