Thomas Anthony Dettore, Jr. (born November 17, 1947 in Canonsburg, Pennsylvania) is a former Major League Baseball pitcher for the Pittsburgh Pirates (1973) and Chicago Cubs (1974–1976). In April, 1976 Tom gave up one of the longest home runs ever hit, and the longest at Wrigley Field (estimated to be over 530 ft, and as long as 600 ft) to Dave Kingman of the Mets.

Tom was among the first former major league players to play in Italy's Serie A1 in the 1980s, alongside Lenny Randle. He was featured in a 60 Minutes documentary on baseball in Italy aired around 1984. From 1988–1995, Tom was a pitching coach in the Pirates minor league system. He then became the Pirates minor league pitching coordinator. On January 13, 2009, he was named the pitching coach for the Double-A West Tenn Diamond Jaxx in the Seattle Mariners organization. After the 2009 season he was named the pitching coach for the Class-A Advanced High Desert Mavericks of the California League.

In addition, Dettore served as a pitching coach for the 1990/1991 Parramatta Patriots of the Australian Baseball League and was the pitching coach for the Sun Cities Solar Sox of the Arizona Fall League in 1993.

(excerpted from Baseball Almanac, BR Bullpen & Wikipedia)