The Orioles are in Seattle taking on the Mariners in T-Mobile Park. During late June, these two teams played three games in Balitmore.
Seattle won the first game in blowout fashion, 13-1 behind the pitching on George Kirby. Kyle Gibson was credited with that loss, and we get to see him on the bump again tonight.
The Orioles won the next two games to take a 2-1 series advantage. Both games were close, and one even went to extra innings.
The Orioles won 6-4 in 10 innings, and 3-2 the next two nights.
Let’s talk about tonight’s matchup!
Orioles vs Mariners Game Information

Matchup Information
- Venue & Location: T-Mobile Park (Seattle, WA)
- Date: Friday, August, 11th, 2023
- First Pitch: 10:10pm Eastern
- Broadcast: MLB Network
Pitching Matchup
- Baltimore Orioles: Kyle Gibson (11-6, 4.50 ERA)
- Seattle Mariners: Luis Castillo (7-7, 3.21 ERA)
Betting Odds
Odds courtesy of Bovada.
Runline
- Orioles +1.5 (-175)
- Mariners -1.5 (+150)
Moneyline
- Orioles +119
- Mariners -142
Total
- Over 7.5 (-115)
- Under 7.5 (-105)
Orioles vs Mariners Prediction & Best Bets
Kyle Gibson saw Seattle once this year. He only pitched 3 innings before giving up 5 ER on 7 hits and 1 HR. Gibson walked 3 batters and only struck out 4 as the Orioles got spanked 13-1.
They won the next two games in close fashion and tonight begin the season finale against each other.
Castillo hasn’t faced the Orioles this year, but his numbers get better at home.
His ERA drops from 3.21 to 2.79 in T-Mobile Park, and his WHIP drops from 1.05 to 0.96. Opponents hit less .200 against him in Seattle, but I do have an Oriole hitter that I’m targeting tonight.
Gibson has has several solid outings in a row, and because of these two studs, I think this game stays under it’s low total.
The Pick: BAL/SEA Under 7.5 (-105) Bovada
Player Props
Ryan O’Hearn Over 1.5 HRR (+100) Bovada

Not only does O’Hearn bat .307 against RHP this year, he also fairs well against Castillo historically.
In 10 at bats, O’Hearn bats .500 against this Mariners’ pitcher.
He has 4 singles and double plus 3 RBIs in his short stint against Castillo.
O’Hearn has had 13 of his 14 doubles and 7 of his 9 HR come against RHP this year. I see no reason why it wouldn’t continue tonight in Seattle.
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