Seattle Mariners vs Baltimore Orioles MLB matchup preview

The Seattle Mariners (35‑32) will face the Baltimore Orioles (31‑36) on Tuesday, June 9, 2026 at Camden Yards in Baltimore. The Mariners sit atop the AL West while the Orioles are fourth in the AL East.

Mariners right‑hander Logan Gilbert (4‑4, 3.79 ERA, 1.10 WHIP) is projected to start for Seattle, and the Orioles will counter with left‑hander Trevor Rogers (3‑6, 6.29 ERA, 1.51 WHIP). Betting lines list the Orioles at +101 and the Mariners at –122, with an over/under set at 8.5 runs.

Recent trends note the Mariners have lost eight of their last nine games as favorites against AL East opponents, while the Orioles have won each of their last four home games as underdogs. Both teams have seen mixed run‑line performance in recent matchups, and total‑runs lines have frequently gone over in their recent games.