Right-handed pitcher Luis Castillo is scheduled to take the mound for the Mariners (54-47) at T-Mobile Park in Seattle. His earned run average in his last three appearances is just 1.45. Right-hander Quinn Priester will pitch for the Brewers (60-41). His ERA in his previous three appearances is 3.24.

Luis Castillo was OK. His fastball was in the zone and past batters and generated eight of his 13 whiffs. He entered the game with a 1.92 FIP over his last four starts, and he continued his fielding-independent dominance with no walks, no homers, seven strikeouts and a 0.89 FIP.