(WSCR) Philip Humber tossed the 21st perfect game in the history of Major League Baseball today against the Mariners.

With a full count and two outs in the ninth inning, Humber got Brendan Ryan to check his swing on the final pitch. Home plate umpire Brian Runge said Ryan went around. The ball got past catcher A.J. Pierzynski, but he quickly ran to it and threw Ryan out at first to complete the final out.

Listen to the final out on 670 The Score here: