Zack Greinke of the Kansas City Royals records his major league-leading 6th win when he shuts out the White Sox, 3 – 0, striking out 10 and walking none. He lowers his ERA to 0.40 for the year.

On May 4, 2009 — Zack Greinke of the Kansas City Royals records his major league-leading 6th win when he shuts out the White Sox, 3 – 0, striking out 10 and walking none. He lowers his ERA to 0.40 for the year.

Source:
Baseball Reference May 4