Timothy Reid McClelland (born December 12, 1951) is an American former umpire in Major League Baseball who worked in the American League from 1983 to 1999 and throughout both leagues from 2000 until his retirement prior to the 2015 season. He called many important games, from post-season games to the George Brett "Pine Tar" game in 1983. He was the plate umpire for the Sammy Sosa corked bat game on June 3, 2003, when the Chicago Cubs hosted the Tampa Bay Devil Rays at Wrigley Field. He wore uniform number 36 after his promotion to the AL, and kept the number when Major League Baseball merged the American and National League umpiring staffs in 2000.