Toledo – Don Kelly (INF/OF)
When the Tigers signed Donnie Kelly after he had left the organization for two years, it was universally thought he would be a nice depth addition at the Triple-A level. Nobody could have ever predicted he would turn in the start to the season that he has. After playing sporadically in April, Kelly played a bulk of the team's games in center field in May, and his offense was fantastic. In May, Kelly hit a whopping .365 with fifteen RBI and nine stolen bases in ten attempts. Kelly has quickly become a favorite of Toledo Manager Larry Parish, and he should continue to be a key cog in the Hens lineup.
Runner-Up: Dusty Ryan (C)
Erie – Ryan Strieby (1B)
Nobody has ever doubted Ryan Strieby's power, particularly after his breakout campaign in 2009 when he led the Florida State League in home runs in only 112 games. In 28 games in May, Strieby blasted seven home runs and five doubles while driving in twenty runs along the way. He walked an impressive 19 times in the month, helping him to a very robust .404 on-base percentage. All the while, Streiby has been trying to learn a new position – left field – as the Tigers try and find a way to get him to Detroit down the line, with Miguel Cabrera locked in at first base. If Strieby keeps slugging like he did in May, he'll force his way to the big leagues.
Runner-Up: Scott Sizemore (2B)
Lakeland – Kody Kaiser (OF)
The Flying Tigers may not have been able to play many games on account of plenty of rain, but the smallish Kody Kaiser made the best of what games they did play. Kaiser ripped to the tune of a .323 average in 19 games, with four doubles, a triple, and two home runs. He also managed to draw 13 walks against just 22 strikeouts while stealing four bases in five attempts. Don't let Kaiser's size fool you, he's a complete player with power, speed, defense, and a tireless desire to succeed on the field.
Runner-Up: Justin Henry (2B)
West Michigan – Ronnie Bourquin (1B/3B)
Ronnie Bourquin may be repeating West Michigan this season, but he is doing exactly what you want a player to do as he repeats a level; he's hitting the living daylights out of the ball. Bourquin posted a very nice .324/.410/.461 line in a horrible hitter's league in 27 May games. As a part of his line he knocked nine doubles and two home runs while driving in 19 fellow Whitecaps. Bourquin's impressive month not only moved his season average to .314, but also earned him his first monthly honor since winning the Oneonta Player of the Month in August 2007.
Runner-Up: Gustavo Nunez (SS)