Toledo – Casey Fossum (LHP)
As a 30-year old left-hander, Casey Fossum's signing by the Tigers was generally considered an after thought, and one meant to provide depth at the Triple-A level. Things have worked out far better than that so far, as Fossum managed a 3-0 mark in six appearances, and has moved into the Toledo rotation. During May, Casey tossed 34 innings, allowing only 14 hits and ten walks, while striking out 39 International League hitters. Fossum finished the month with a 1.06 ERA and 0.71 WHIP.
Runner-Up: Blaine Neal (RHP)
Erie – Andrew Kown (RHP)
Filling in as a member of the Erie rotation while injuries hamper the pitching staff, Kown has done much better than his 1-3 May record would suggest. With a 3.16 ERA in 25 2/3 innings this month, Kown has kept the ‘Wolves in most ball games he has pitched. By allowing only 16 hits and eight walks, Andrew has been able to minimize any damage from yielding three home runs. Though his end-state is likely in the bullpen, Kown has been an integral member of the Erie rotation this season.
Runner-Up: Danny Zell (LHP)
Lakeland – Jonah Nickerson (RHP)
There have been times this season where right-hander Jonah Nickerson has been absolutely unhittable. On May 18th, Nickerson carried a no-hitter into the eighth inning, the second time he'd done that this season. He followed up that impressive start with seven innings of 3-hit ball and ten strikeouts on the 23rd. Nickerson finished the month with a 3-1 record in six starts, backed by a 2.50 ERA and 1.01 WHIP. With continued performance such as this, Nickerson could find himself knocking on the door to Erie later this summer.
Runner-Up: Duane Below (LHP)
West Michigan – Jon Kibler (LHP)
As dominant as Alfredo Figaro has remained through the season's second month, Jon Kibler's performance in May bordered on incredible. Kibler picked up the decision (four wins) in all five of his starts last month, moving his season mark to 5-2. In 36 1/3 innings, Jon spun a 1.49 ERA while allowing only 14 hits and striking out 35. Kibler has made huge strides since being selected out of Michigan State last summer, and there are starting to be rumblings of him turning into a serious lefty prospect.
Runner-Up: Alfredo Figaro (RHP)
VSL Tigers – Jose Diaz (RHP)
The VSL Tigers have struggled mightily out of the gates this season, winning only two games in the season's first month. In four starts for the team, Diaz took the loss twice, but such a record belies his exceptional performance. Averaging a shade over five innings per start, Jose has struck out 20 in 22 2/3 innings while yielding a mere twelve base hits. The lack of base runners against Diaz has allowed him to keep his ERA at a shiny 2.78, and puts the 19-year old at the head of his current VSL pitching class.
Runner-Up: Wilsen Palacios (RHP)