Toledo – Fu-Te Ni (LHP)
Only the Tigers second recent foray into the Pacific Rim, Ni is an older prospect with plenty of national and world experience in Taiwan. There was a slim chance he could make the Opening Day roster in Detroit, and more months like this may get him to Detroit sooner than later. In May, Ni finished with a 1-0 record, 2.08 ERA, and 0.98 WHIP. Ni has been logging multiple innings for the Hens, tossing thirteen innings in just ten appearances, allowing only ten hits and three walks. The award is Ni's first since joining the organization this offseason.
Runner-Up: Casey Fien (RHP)
Erie – Jon Kibler (LHP)
It was an awful Double-A debut in April, as Kibler's 7.64 ERA and 1.87 WHIP were enough to make your eyes hurt. That all changed in May, as Kibler found the form that made him TigsTown's West Michigan Pitcher of the Year in 2008. In 35 innings over five starts, Kibler fired two complete games, while allowing only 32 hits and 13 walks. His 1.53 ERA and 2-2 record helped Erie stay in the hunt in their division race. The outstanding numbers he posted in May, dropped his season ERA to a much more respectable 3.57, and earned him his fourth TigsTown award.
Runner-Up: Zach Simons (RHP)
Lakeland – Scott Green (RHP)
Green was one of the Tigers numerous relievers selected towards the top of last year's draft, and their belief in his arm is beginning to pay off already. Green has been slamming the door when Lakeland has the lead, and he won two games and saved three more in eight May appearances. Over ten innings, Green struck out eight and walked four, but posted a sparkling 0.90 ERA; giving him 2.50 ERA for the season to go along with a perfect 3-0 record and six saves for the LFT.
Runner-Up: Robbie Weinhardt (RHP)
West Michigan – Tyler Stohr (RHP)
Another closer from the 2008 draft class, Stohr has been even more outstanding for West Michigan. After a very strong full-season debut in April, Stohr topped himself in May. The only thing that didn't go his way was the fact that he walked his first batter of the season. In 22 innings on the season (14 in May), Stohr has walked only one batter, while striking out 17. He posted a 1.88 ERA and 0.84 WHIP last month, with four saves to his credit, as he helped West Michigan remain in the fight for first place.
Runner-Up: Casey Crosby (LHP)