Originally posted at my blog: On Saturday, new Twins relief pitcher Joel Zumaya tore his UCL after throwing just 13 pitches to live batters. A torn UCL requires Tommy John surgery. Given his injury history and the fact that he hasn't pitched in a major league game since 2010 has Zumaya thinking of retiring. Zumaya was a sensation as a rookie in 2006. He went 6-3 with a 1.94 ERA and struck out 97 in 83.1 innings for Detroit. He threw 103 miles an hour. He was going to be a star...... ...