Signed out of Venezuela in 2007, Perez looked much better at Triple-A last season. He’s done a very good job of limiting home runs (just 10 in 21 starts and one relief appearance in the minors last season), but control remains his bugaboo (56 walks in 127 IP, or nearly four per nine innings). He enjoyed a breakout season back in 2009 at Class-A (reaching Double-A at the age of 18) and has been young for his leagues ever since. Now it’s time for Perez to make the big leap, so we’ll see how he reacts in early May when he’s ready to go.