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Orioles vs Mariners Prediction 8/13/25 MLB Picks Today

Seattle Mariners (67-53) vs. Baltimore Orioles (53-66)
August 13, 2025 6:35 pm EDT
The Line: Baltimore Orioles 118 / Seattle Mariners -144; Over/Under: 8.5
(Get latest betting odds)

In this article we will formulate an Orioles vs Mariners prediction for this MLB game on Wednesday, August 13th at Camden Yards in Baltimore, Maryland. Let’s take a look at the prediction for this MLB matchup. 

Baltimore Orioles Betting Preview

The Baltimore Orioles are 53-66 this season after they lost game one by a score of 1-0 on Tuesday night. Baltimore had a very good pitching night, but their offense produced nothing in the shutout loss. The Orioles recorded five hits in the game and they were led by Henderson, who went 1-3 with one walk in the loss. Baltimore started Kremer, who allowed five hits and one earned run over 8.0 innings for the loss, while Garcia finished the last inning. 


Prior to this series, the Orioles lost two out of three against the Athletics and two out of three against the Phillies. Baltimore has lost six of their last eight games and they are currently last in the AL East standings. The Baltimore pitching staff has a 4.82 ERA with a 1.40 WHIP and a .265 opponent batting average, while their offense has scored 505 runs with a .239 batting average and a .303 on base percentage this season. Jackson Holliday has led Baltimore with 14 home runs and 44 RBIs, while Gunnar Henderson has added 14 home runs and 50 RBIs this year. The projected starting pitcher for Baltimore is Trevor Rogers, who is 5-2 with a 1.44 ERA and a 0.83 WHIP over 62.1 innings pitched this season. 

Seattle Mariners Betting Preview

The Seattle Mariners are 67-53 this year after they won game one by a score of 1-0 on Tuesday night. Seattle scored in the first inning and that was enough to get the very low scoring win. The Mariners recorded six hits in the game and they were led by Naylor, who went 1-4 with one RBI in the win. Seattle started Kirby, who allowed three hits and zero earned runs over 7.0 innings for the win, while Munoz picked up the save. 

Prior to this series, the Mariners swept the Rays in three games and also swept the White Sox in three games. Seattle has won eight games in a row and they are currently tied for first in the AL West with Houston. The Seattle pitching staff has a 3.77 ERA with a 1.23 WHIP and a .238 opponent batting average, while the offense has scored 548 runs with a .243 batting average and a .320 on base percentage this season. Cal Raleigh has led Seattle with 45 home runs and 98 RBIs, while Randy Arozarena has added 23 home runs and 57 RBIs this year. The projected starting pitcher for Seattle is Logan Gilbert, who is 3-4 with a 3.35 ERA and a 0.98 WHIP over 83.1 innings pitched this year.

Why the Orioles will beat the Mariners

  • The Orioles have won six of their last seven games as underdogs against the Mariners.
  • The Mariners have lost four of their last five games as road favorites against American League opponents following a road win.
  • The Orioles have covered the run line in each of their last seven games as home underdogs.
  • The Mariners have failed to cover the run line in 10 of their last 11 night games against AL East opponents following a win.
  • The Orioles have led after 3 innings in seven of their last eight Wednesday games against American League opponents that held a winning record.
  • The Orioles have led after 5 innings in five of their last six games against the Mariners at Oriole Park at Camden Yards.

Total Runs Facts

  • Seven of the Mariners’ last eight road games have gone UNDER the total runs line.
  • Five of the Orioles’ last six games have gone UNDER the total runs line.
  • The ‘Inning 1 UNDER 0.5 runs’ market has hit in each of the Orioles’ last eight Wednesday night games.
  • The ‘Inning 1 OVER 0.5 runs’ market has hit in each of the Mariners’ last five night games.

Baltimore Orioles Player Prop Facts

  • Gunnar Henderson has hit a home run in three of the Orioles’ last four home games against the Mariners.
  • Trevor Rogers has recorded six or more strikeouts in three of his last four appearances with the Orioles as underdogs.
  • Adley Rutschman has recorded at least one hit in each of the Orioles’ last nine games as underdogs.
  • Trevor Rogers has recorded a win in three of his last four appearances.
  • Gunnar Henderson has recorded a Double in three of the Orioles’ last four games as home underdogs.

Seattle Mariners Player Prop Facts

  • Cal Raleigh has hit a home run in four of the Mariners’ last five games against AL East opponents that held a losing record.
  • Logan Gilbert has recorded nine or more strikeouts in each of his last four appearances with the Mariners as favorites against AL East opponents.
  • Victor Robles has recorded at least one hit in each of his last eight appearances.
  • Luke Raley has recorded a Double in three of his last four appearances in night games against AL teams that held a losing record.

Orioles vs Mariners Prediction 

Seattle started this series with a nice 1-0 win on Tuesday night and they have won eight games in a row. The Mariners are 30-28 on the road this season, while the Orioles are 28-30 at home. Baltimore has lost three games in a row and they have scored a total of five runs in those three games. The Orioles are starting Rogers, who has allowed total of five earned runs in his last five starts. The Mariners are starting Gilbert, who has allowed one earned run or fewer in three of his last five outings. This is a very good pitching matchup, but Rogers is on an elite level right now and I have to back him at a plus money price. Take the Orioles here. 

David Racey's Free Pick: Orioles ML

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David Racey

David started writing about sports in 2015, but sports has been his passion for as long as he can remember. David spends most of his free time watching pretty much anything sports related from Baseball to Tennis and everything in between. David likes to analyze statistics and recent results to form an unbiased opinion on whatever game he is breaking down. Follow David on Twitter at @itsyerboi41

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