Mariners ace Luis Castillo was cruising during his Monday evening start against the White Sox, and it seems one specific pitch type was particularly effective.
In the win, which was Seattle’s seventh in a row, Castillo found plenty of success with his fastball, and leaned upon it heavily in the middle innings.
In fact, during a 47-pitch stretch extending from the fourth inning to the seventh, the Mariners’ right-hander exclusively threw a combination of four-seam fastballs and sinkers to Chicago’s lineup.
