Watching B.J. Rosenberg pitch makes me long for the days of Danys Baez, David Herndon, and Chad Qualls. Those guys are downright unhittable compared to what we’ve seen from Rosenberg in his brief time in the major leagues.
It’s way too short to write Rosenberg off as a future major league reliever but there hasn’t been much reason for optimism so far. Rosenberg has faced 37 big league hitters in his career – seven have gotten hits, eight have walked, and two have homered. He’s posted a WHIP of 1.960 and an ERA of 12.91.
Rosenberg looked overmatched the minute he set foot for the first time on a major league mound. That day, he gave up a hit, a walk, and two earned runs. The next outing, he gave up two more hits and two earned runs. And in his third outing, he pulled off the dubious feat of walking four batters and giving up two more runs.
He faced three batters in the series against the Miami Marlins, allowing all three to reach (two hits, one walk), and all three to score. And tonight, he gave up a two-run blast. Sure, it was Ryan Braun who hit it, but Rosenberg’s career numbers are frightening.
Yet I would continue to pitch him regularly if I managed the Phillies. He had a 2.00 ERA and a high strikeout rate in Triple-A, and while there’s a big difference between the top level of the minor leagues and the majors, it may just take some time for Rosenberg to get his feet wet. Michael Schwimer was terrible in his first big league action in 2011 and by this year, he was a valuable piece of the bullpen. The same could happen for Rosenberg.
And it’s not like he will cost the Phillies a playoff spot while he’s giving up runs and walking batters.