Watkins, 23, hit .281 with 93 runs scored, 20 doubles, 11 triples, nine home runs and 52 RBIs in 133 games for Double-A Tennessee. He led the Southern League in runs scored, was second in triples and walks (76) and was fourth in on-base percentage (.383).
A 21st round pick in the 2008 Draft, Watkins has a .285 batting average in 475 career Minor League games.
Struck, 22, went 14-10 with a 3.18 ERA in 28 games (26 starts) for Tennessee. He led the Southern League in victories, ranked third with 155 2/3 innings pitched and fourth in ERA. He led the club with 123 strikeouts and 44 walks, and limited opposing hitters to a .238 batting average.
From May 29 through the end of the season, Struck went 10-5 with a 2.29 ERA in 18 games (16 starts). He allowed three or fewer earned runs in 20 of his 26 starts while giving up two or fewer walks in 21 starts.
A 39th-round selection in the 2009 Draft, Struck is 32-27 with a 3.50 ERA in 84 career Minor League games, including 73 starts. He has struck out 330 batters, walked 134, and surrendered 28 home runs in 431 2/3 innings pitched.