Luis Castillo pitched seven scoreless innings and struck out a season-high eight batters as the Seattle Mariners defeated the visiting Pittsburgh Pirates 1-0 on Saturday evening.

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.