Christian Petersen/Getty Images
I'll give Ames a pass for going to a rival school of mine (Gonzaga, versus my alma mater Washington State), because he's been destructive in the Dodgers minor league system since being drafted in 2009. Originally a starter, the righty was converted to a relief pitcher and had a lot of success as a closer in recent years.
He has a decent repertoire of pitches, but relies mostly on his fastball and slider in his relief role. The power isn't overwhelming, but he locates his fastball very well and can then get hitters to chase the breaking ball. Ames' bread and butter is attacking early with fastballs and getting ahead of hitters in order to better utilize that slider.
The Dodgers are very high on Magill, and for good reason. Even without overpowering stuff, Magill has been fantastic as a prospect in the Dodgers organizations so far, registering a high strikeout-per-inning rate. He is also a mostly fastball-slider guy, but seems to get more swing-throughs than Ames does.
With Magill's strikeout-to-walk ratio, he should at least get a shot at some spot starts in the near future in the majors. He strikes out nearly three times as many batters as he walks, which is impressive, considering he struck out 168 batters in 146.1 innings last year for Double-A Chattanooga.
Since the Dodgers gave up on Wall as a starter, he has excelled in a relief role.
Last year he closed out 28 games for Triple-A Albuquerque and struck out just about one batter per inning. Since becoming a reliever, Wall has added a little git-up to his fastball, and even was said to hit 100 miles per hour on occasion.
As we've seen in the past, though, speed doesn't equal success. Wall still has control issues and relies on the fastball too much to get him out of jams. He has the physical make-up to be a good right-hand specialist, but Wall only has a couple minor league options left and his time to make an impact in the big league bullpen is dwindling.
Formerly a first-round pick of the Dodgers (back in 2007), Withrow struggled with consistency and injuries as his minor league career began. But the fans and the front office have been high on Withrow because of the dazzling potential in that right arm. Recently, the Dodgers officially converted him to a reliever.
Some coaches think that Withrow has shown flashes of Eric Gagne in his new relief role, and his power arm certainly has that potential. Withrow can throw mid-90's and has a good breaking ball—his arsenal was always a little bit better suited for a relief role anyway, and he may get a look in 2013.