Pitching was the key for the Seattle Mariners in a 1-0 victory against the Pittsburgh Pirates on Saturday at T-Mobile Park. Living up to his nickname,

Luis Castillo had his best outing of the season and rookie Ben Williamson drove in the game's only run as the Mariners eked out a 1-0 victory over the Pirates.

Ben Williamson had an RBI double in the sixth inning, Luis Castillo tossed seven innings, and the Seattle Mariners beat the Pittsburgh Pirates 1-0.