Simon Castro - Padres: The Padres top pitching prospect has struggled in his 3 starts this year. He has a 8.40 ERA through 15 innings, having given up 19 hits and 10 walks with 11 strikeouts.
Jeremy Moore - Angels: The toolsy outfielder is hitting .345 after 13 games with 3 doubles, 3 triples and a home run. He has 15 Ks to 2 walks and only 1 successful steal attempt in 3 tries.
Charlie Blackmon - Rockies: After impressive in spring training, Blackmon is impressing at AAA. He is hitting .328 with 4 doubles, a triple and 4 home runs. He has 8 walks to 7 strikeouts and 5 steals.
John Maine - Rockies: Maine doesn't appear to be pitching his way back to the majors anytime soon. He has a 9.69 ERA over 13 innings in 3 starts.
Rex Brothers - Rockies: Look for Brothers to make his MLB debut sometime this year. He has a 0.00 ERA in 8 innings. He has struck out 14 batters.
Bryan Lahair - Cubs: If the Cubs outfield weren't so crowded Lahair may have been given a second shot at making it in the majors by now. He is hitting .405 with 6 doubles and 4 home runs.
Brett Lawrie - Blue Jays: Lawrie is knocking on the door to the majors with a .410 AVG, 7 doubles and 3 stolen bases in as many tries. The biggest blemish is the 3/15 BB/K ratio.
David Cooper - Blue Jays: Cooper was impressive in spring training and is doing much of the same in AAA. He is batting .355 with 7 doubles with 2 HR and 17 RBI.
Brad Mills - Blue Jays: Mills is making a case for being called up with matching 0.82 WHIP and ERA through 22 innings. He has struck out 17 in that time.
Chris Carter - A's: The large power hitter is off to a slow start with a .173 AVG and 20 Ks. He has shown some power with 3 doubles and 2 home runs.
Guillermo Moscoso - A's: Moscoso has a 0.56 ERA through 16 innings. He has allowed only 9 hits and 2 walks in that time while striking out 16.
Emmanuel Burris - Giants: Hitting .339 with 7 walks and 6 strikeouts, Burris has swiped an impressive 15 bases in 15 games.
Clint Robinson - Royals: Robinson could challenge for another triple crown this year. He is hitting .373 with 4 home runs and 11 RBI. He has walked 8 times and struck out 10.
Mike Moustakas - Royals: Moose is hitting .241 with 2 home runs and a double.
Danny Duffy - Royals: Duffy has a 1.29 ERA through 14 innings with a 16/4 K/BB ratio.
Mike Montgomery - Royals: The tall lefty has a 3.00 ERA after 15 innings. Opponents have managed just 10 hits while striking out 14 times.
Brandon Boggs - Brewers: Boggs has a .500 OBP thanks to 14 walks. He has a .233 ISO.
Mark Rogers - Brewers: Rogers has walked 12 in 11.1 innings. The Brewers were hoping for a better start from their top prospect.
Alex Liddi - Mariners: Liddi is batting a pedestrian .175 with 26 strikeouts.
Tom Koehler - Marlins: The Southern League's most outstanding pitcher last year is having another strong campaign in 2011. He has a 1.00 ERA in 18 innings with opponents hitting just .159 against him. He has 17 Ks to 4 walks.
Bryce Harper - Nationals: Down in A ball, Harper's bat is starting to stir. He has home runs in back-to-back games with 6 RBI in his most recent outing. He is now hitting .306 on the year with 3 HR and 14 RBI in his first 15 games. He has 9 walks and 13 strikeouts and has stolen 3 bases in 5 tries.
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