ARLINGTON -- Right-hander Kyle Gibson made his first start for Triple-A Rochester on Saturday since undergoing Tommy John surgery last September.
He gave up four runs -- all in the third inning -- on six hits in three innings, striking out five and walking none, while throwing 32 of his 47 pitches for strikes. He was expected to throw between 60 and 65 pitches, but was replaced by Deolis Guerrera in the fourth inning.
Gibson -- the Twins' sixth-best prospect and top pitching prospect, according to MLB.com -- posted a 2.49 ERA in 11 appearances, including nine starts, between stints with the Twins' Rookie League team and High Class A Fort Myers, striking out 23 and walking five in 21 2/3 innings. Minnesota's first-round pick in 2009, Gibson, 24, went 3-8 with a 4.81 ERA with Rochester in '11, striking out 91 and walking 27 in 95 1/3 innings over 18 starts.
Assistant general manager Rob Antony said that Gibson, a candidate to make his Major League debut next season, will move on to the Twins' Florida Instructional League in September before heading to the Arizona Fall League in October.