Baltimore Orioles vs Seattle Mariners Prediction 6/18/2026 Today’s MLB Picks

The Baltimore Orioles and the Seattle Mariners meet Thursday in MLB action from T-Mobile Park. We will look at this from a betting perspective and determine the best bets for this game. Here’s a Baltimore Orioles vs. Seattle Mariners prediction.

Starting Pitching Matchup

The Baltimore Orioles will send out Shane Baz for the start here and Baz is 4-6 with a 4.06 ERA and 67 strikeouts this season. Bryan Woo will start for Seattle and is 5-5 with a 4.28 ERA and 79 strikeouts this season.

Baltimore Orioles Recap

The Baltimore Orioles come into this game looking to add on to their 5-3 win over the Mariners from Wednesday to improve to 35-40 this season. After this series, the Orioles will head on the road for a series against the Los Angeles Dodgers.

Orioles Snap Three-Game Slide

Taylor Ward has 70 hits with 17 doubles and 20 RBIs while Gunnar Henderson has 69 hits with 13 doubles, 15 home runs and 36 RBIs and Pete Alonso has 71 hits with 13 doubles, 16 home runs and 48 RBIs. Adley Rutschman has 51 hits with 15 doubles, 8 home runs and 40 RBIs. Jeremiah Jackson has 45 hits with 7 doubles, 7 home runs and 29 RBIs as well on the year. Samuel Basallo has 53 hits with 9 doubles, 10 home runs and 30 RBIs.

Seattle Mariners Recap

The Seattle Mariners come into this game looking to shake off their loss at the hands of the Orioles from Wednesday to sit at 36-37 this season. After this series, the Mariners will duke it out with the Boston Red Sox at home.

Mariners Drop 5 Of Last 7

Luke Raley has 14 home runs and 35 RBIs this season. Cole Young’s added 70 hits with 10 doubles, a triple, 6 home runs and 33 RBIs and Cal Raleigh has 28 hits with 4 doubles, 7 home runs and 20 RBIs as well this season. Randy Arozarena has 76 hits with 18 doubles, 7 home runs and 33 RBIs as well on the year. Josh Naylor also has 68 hits with 8 home runs and 32 RBIs as well on the year. Julio Rodriguez has also added 75 hits with 15 doubles, 13 home runs and 36 RBIs.

Baltimore Orioles @ Seattle Mariners Betting Trends: June 18, 2026

• Probable Starting Pitcher: Bryan Woo      Record this season: 5-5      ERA: 4.28
• Home Record: 4-0
• Last 5 against Orioles: 0-2

Why the Seattle Mariners will win

• The Orioles have lost 10 of their last 11 road games against teams that held a winning record.
• The Mariners have won 27 of their last 33 home games against teams that held a losing record.
• The Orioles have failed to cover the run line in 10 of their last 11 road games against teams that held a winning record.
• The Mariners have covered the run line in each of their last three day games against American League opponents.
• The Orioles have lost the first inning in each of their last five Thursday games against opponents that held a winning record.
• The Mariners have led after 5 innings in eight of their last nine Thursday day games as favorites.
• The Mariners have led after 3 innings in 10 of their last 11 day games against American League opponents that held a losing record.

• Probable Starting Pitcher: Shane Baz      Record this season: 4-6      ERA: 4.06
• Road Record: 1-4
• Last 5 against Mariners: 1-0

Why the Baltimore Orioles will win

• The Orioles have won seven of their last eight games as road underdogs against the Mariners.
• The Mariners have lost four of their last five games as home favorites against AL East opponents.
• The Mariners have failed to cover the run line in each of their last nine Thursday games as favorites against AL East opponents.
• The underdogs have covered the run line in nine of the Orioles’ last 10 games at T-Mobile Park.
• The Mariners have lost the first inning in three of their last four home games against AL East opponents.
• The Mariners have trailed after 5 innings in four of their last five games as home favorites against AL East opponents.
• The Mariners have trailed after 3 innings in 10 of their last 12 games as favorites against AL East opponents.

Total Runs Facts

• Each of the Mariners’ last five games after playing the previous day have gone OVER the total runs line.
• Each of the Orioles’ last four road games after playing the previous day have gone OVER the total runs line.
• The ‘Inning 1 UNDER 0.5 runs’ market has hit in nine of the last 10 day games between the Orioles and Mariners.
• The ‘Inning 1 UNDER 0.5 runs’ market has hit in nine of the Orioles’ last 10 day games against American League opponents.

Seattle Mariners Player Prop Facts

• Cal Raleigh has hit a home run in four of the Mariners’ last six home games against AL East opponents that held a losing record.
• Julio Rodriguez has recorded at least one hit in each of the Mariners’ last 18 home games against AL opponents.

Baltimore Orioles Player Prop Facts

• Colton Cowser has hit a home run in five of the Orioles’ last nine day games.
• Jordan Westburg has recorded at least one hit in each of his last eight appearances with the Orioles as road underdogs against AL West opponents.
• Taylor Ward ranks 6th amongst qualified players for On Base Percentage (.399) this season.

Matchup/League Facts

• The Mariners rank 1st in the league for walks allowed this season (193).
• The Mariners rank 28th in the league for doubles this season (96).
• The Orioles rank 28th in the league for opponent batting average this season (.260).
• The Orioles rank 27th in the league for strikeouts against this season (673).

Baltimore Orioles vs. Seattle Mariners Prediction

I’m on the Mariners in this one. I get the case to be made for either side here as both teams have been up and down and Bryan Woo just got rocked by Baltimore in his last start. But that was on the road and Woo has been a much different pitcher at home this season and I look for him to get some revenge here. Give me Seattle.

Chris Ruffolo's Pick: Seattle -145