Hernandez made the voting easy this month, as he dominated the Texas League in six starts. The left-hander allowed just one earned run and he lasted at least six innings in each of his six outings. Hernandez held batters to a .212 average and posted a 1.41 GO/AO.
It has been an outstanding season overall for Hernandez, who sports a 2.21 ERA in 126 innings for the RockHounds. Hernandez has struck-out just 90, but he has walked only 37 and has allowed just five homeruns. The Santa Clara native is putting himself in a good position to be a hot commodity when he hits the minor league free agent market this winter.
Kyle Finnegan, Vermont (23.2 IP, 1.52 ERA, 18:3 K:BB, 0 HR)
Finnegan's first full month as a professional couldn't have gone much better, as he allowed fewer than one base-runner per inning pitched and didn't allow a homerun. Finnegan has been stretched out slowly after a full collegiate season, but he has gone at least six innings in each of his last three starts.
Brent Powers, Vermont (31.2 IP, 2.84 ERA, 24:11 K:BB, 2 HR)
Powers was named to the NY-Penn League All-Star team and he has put together a fine season for the Lake Monsters after struggling at this level the previous two seasons. The left-hander is holding left-handed hitters to a .208 average. He is fourth in the league in ERA with a 1.85 mark.
Raul Alcantara, Stockton (32.1 IP, 30:5 K:BB, 3.34 ERA)
Alcantara has made a smooth transition from Low-A to High-A. His homer numbers have risen, something to be expected given the nature of the Cal League, but Alcantara has improved in several areas, including his K/9. With 123.2 innings pitched, Alcantara has already exceeded his previous career-high in innings pitched, so he may be closely monitored for the remainder of the season. He has walked just 15 batters this year.
Ryan Dull, Midland/Stockton (19.2 IP, 1.37 ERA, 26:2 K:BB)
Dull's meteoric rise through the A's system continued in July, as he made his second jump, this time from High-A to Double-A. Between three levels this season, Dull has a 1.95 ERA and a 69:6 K:BB in 50.2 innings pitched. His July numbers were mostly compiled in the hitter-friendly California League, where he didn't allow a homerun in 22.2 innings pitched.
Seth Frankoff, Stockton (16.1 IP, 24:6 K:BB, 1.10 ERA)
Frankoff continues to impress as a reliever after making the transition from the starting rotation at the start of the year. The right-hander has 79 strike-outs in 63.2 innings pitched this season and opponents are batting just .170 against him. In July, he had a WHIP under 1.00. His ERA has gone down each month he has played this year.
Tucker Healy, Stockton (12.1 IP, 2.92 ERA, 21:3 K:BB)
Healy's strike-out numbers this season are staggering, as the right-hander has K'd 74 in just 48 innings of work. In July, he nearly struck-out two per inning pitched. Healy has also had excellent command, walking only 10 all season. The transition from the Midwest League to the Cal League has been a smooth one for the 2012 23rd-round pick.
Tyler Vail, Beloit (15.2 IP, 1.72 ERA, 13:5 K:BB, 2 SV)
Vail has found a home in the Beloit bullpen after starting his pro career in the rotation, and July was his best month to date in 2013. The right-hander struck-out nearly a batter an inning and he improved his BB/9. Vail has become one of the Snappers' late-inning options.
Trevor Bayless, Vermont (11.2 IP, 13:3 K:BB, 1.54 ERA, 5 SV), Sam Bragg, Vermont (11 IP, 0.00 ERA, 10:2 K:BB, 3 SV), Seth Streich, Beloit (31 IP, 2.32 ERA, 16:8 K:BB, 0 HR), Omar Duran, Stockton (11.1 IP, 19:5 K:BB, 0.00 ERA), Derek DeYoung, Beloit (18.2 IP, 2.41 ERA, 16:4 K:BB), Stuart Pudenz, Beloit (13.1 IP, 0.68 ERA, 16:6 K:BB, .167 BAA)