Buck Showalter was ejected for arguing about the strike zone during the second inning of the Orioles game with Houston.
In his first start in over a month, the pitcher shuts down the Mariners.
Many fans think the Orioles should have re-signed Nelson Cruz. His absence is key.
The Orioles try to break their five-game losing streak against the American League's hottest pitcher, Dallas Keuchel.
Rookie Lance McCullers pitched a complete game as the Houston Astros dealt the Orioles their fifth straight loss, 3-1.