While the Rays took a fairly significant hit in the Rule 5 draft, the Nationals—whose farm system is far removed from its pre-2012 status—lost two players who will likely reach the major leagues: left-hander Danny Rosenbaum (I know, great last name) to the Rockies and second baseman Jeff Kobernus to the Red Sox.
Rosenbaum, 25, had steadily risen through the Nationals’ system but never been overly impressive. His fastball only sits in the high-80s/low-90s and induces plenty of weak groundball outs, and is supplemented by a pair of average (but well located) offspeed pitches in a curveball and changeup.
He spent the entire season at Double-A last year, registering a 3.94 ERA, 2.26 BB/9 and 2.29 GO/AO in 155 innings. He pitched especially well over the first two months of the season, posting a 0.77 and 2.71 ERA in April and May, respectively.
A second-round draft pick in 2009 out of the University of California, Kobernus, 24, has a potential future as a reserve infielder. It’s even more likely after the Red Sox traded him to Detroit after selecting him in the Rule 5 draft—a team that views him as “the next Don Kelly.”
Essentially a singles and doubles hitter, Kobernus’s most valuable tools are his speed and glove. He batted .282/.325/.333 with 42 stolen bases and 57/19 K/BB last season at Double-A Harrisburg.