The Mariners were unable to unseat one of the hottest teams in the National League and further reaffirmed the need to improve at the trade deadline.

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.

Wednesday's start was one of Luis Castillo’s worst of the season, as the Mariners’ veteran allowed six runs over five innings in a lopsided 10-2 loss.