Dyer surrendered one hit -- a solo homer in the second inning -- over seven innings as Double-A Montgomery rallied past Jacksonville, 3-2.
Dyer struck out five while walking one batter and hitting another for the Biscuits. Two batters after giving up the solo blast to Kyle Jensen, the Marlins' No. 16 prospect, Dyer hit Jeff Dominguez with two outs in the frame. Dyer, who did not figure into the decision, picked off Dominguez to end the inning.
The 24-year-old right-hander retired 11 straight following the pickoff before issuing a walk with two outs in the sixth. Dyer faced two over the minimum and threw 54 of his 90 pitches for strikes.
Dyer, a ninth-round pick by the Rays in 2008, has been lights-out in May thus far. The Colorado native has allowed two runs -- one earned -- in three starts this month and surrendered 12 hits over 19 innings for the Biscuits. Overall, he is 4-2 with a 2.02 ERA in eight starts this season.
Hak-Ju Lee, Tampa's top position player prospect, singled home the winning run in the bottom of the ninth for the Biscuits. Lee finished with three hits to raise his average to .241.
Adam Liberatore (3-2) was credited with the win after allowing an unearned run on three hits over two innings of relief.