Justin De Fratus, Philadelphia Phillies: De Fratus absolutely looks like a big league bullpen arm, with a 92-95 mph fastball that touched 96 mph once when I saw him, and good tilt on an 83-85 mph slider that can get strikeouts. A strong pitcher with a good frame who uses his lower half well, De Fratus does a good job finishing his pitches. De Fratus isn’t far from a call-up and looks like he could fill a seventh- or eighth-inning role at the big league level, and from there anything can happen. Then again, he’s also in an organization that left Scott Mathieson behind to dominate Triple-A hitters all year.
B.J. Rosenberg, Phillies: Rosenberg appeared in only 20 games this season due to a lat strain, so we can give him a bit of a pass if he’s still getting up to speed. In one of his outings I saw, he gave up three homers in four batters, all on poorly located fastballs. He has been working in the 91-92 mph range and occasionally touching 93 mph, but with not a lot of movement on it. His low-80s slider projects to “solid average,” and his 80-81 mph changeup has been below average. I’m just not seeing good stuff or command right now.
I love that De Fratus is getting his deserved props now. He’s done what every prospect needs to do, continue to prove himself while he climbs the ladder. 2011 could be a big year for him. Rosenberg, well, not as optimistic.