Tyler Kali Yates (born August 7, 1977) is an American police officer and former professional baseball pitcher.

[1] Yates pitched in the Athletics organization until being traded to the New York Mets with Mark Guthrie on December 1, 2001, for David Justice.

[15] Yates was traded to the Pittsburgh Pirates on March 26, 2008, in exchange for minor league pitcher Todd Redmond.

[19][20] He returned to the Pirates organization for the 2011 season, and participated in spring training,[21][22] until being cut from major league camp in March.

[6][25] Tyler and Kirby were the second pair of brothers from Hawaii to play Major League Baseball, after Bronson and Dane Sardinha.