Baltimore Orioles vs Seattle Mariners Preview
Today's Starting Matchup
Today's starting pitching matchup features Baltimore Orioles's Kyle Bradish (3-7, 4.30 ERA) against Seattle Mariners's George Kirby (5-6, 4.07 ERA).
Both starters carry similar ERAs, setting the stage for a potential pitchers' duel. WHIP: Kyle Bradish 1.57, George Kirby 1.31.
Advanced metrics: Kyle Bradish — FIP 4.70, K% 22.6%, 73.3 IP / George Kirby — FIP 3.40, K% 21.1%, 84.0 IP
Team Season Comparison
2026 season record: Baltimore Orioles 34-40 (.459), Seattle Mariners 38-36 (.514).
Seattle Mariners holds the edge in the season standings, though Baltimore Orioles can't be counted out based on head-to-head matchups.
Recent form: Baltimore Orioles on a 3-game losing streak, Seattle Mariners on a 1-game win streak.
Based on starting pitching, Seattle Mariners holds the edge.
Bullpen Analysis
Baltimore Orioles bullpen: 13 relievers on the active roster. Key arms: Albert Suárez 4.40 ERA, 19K in 30.2IP, Andrew Kittredge 6.06 ERA, 15K in 16.1IP, Brandon Young 3.18 ERA, 44K in 62.1IP.
Seattle Mariners bullpen: 13 relievers on the active roster. Key arms: Alex Hoppe 5.40 ERA, 22K in 20.0IP, Andrés Muñoz (Closer) 5.68 ERA, 38K in 25.1IP, Bryan Woo 4.28 ERA, 79K in 82.0IP.
Win Probability
Projected win probability: Baltimore Orioles 47% vs Seattle Mariners 53%
Factors: Seattle Mariners's starter owns the lower ERA, Seattle Mariners's home-field advantage. Of course, baseball's inherent randomness means actual results may differ.
Key Tactical Points
Workload comparison: Kyle Bradish averages 5.2 IP per start vs. George Kirby at 6.0 IP. Getting six-plus innings from the starter significantly eases the bullpen burden.
Kyle Bradish has allowed 11 HR this season — a concern against a lineup with extra-base power.