It's his 5th season in pro-ball and he hadn't pitched in a full season league until this year. Not sure why as his numbers or control were never bad.
Big kid with a big, heavy fastball but reportedly working on the secondaries.
From BP's top 10 Astros prospects (wasn't on the list but was in the "Prospects on the Rise" section):
"1. RHP Joe Musgrove: A former supplemental first-rounder in a stacked 2011 draft class, it has taken Musgrove some time to get going on the developmental side. Last season was a coming out party of sorts for the big and broad righty, as he was able to put together over 75 innings of high-quality ball for Tri-City, spearheaded by a solid plus fastball that can sit 91 to 95 mph with good life down in the zone. His curve is a second potential swing-and-miss pitch, and there is some feel for a change-piece, which he worked in with more comfort as the season progressed. It’s not an elite package, but Musgrove has a chance to develop into a solid number-three or number-four starter in time, and could potentially handle late-inning work, as well, should Houston so require. He’ll step up to full-season ball in 2015 and should be in play for next year’s top ten list assuming continued growth over the next year."
And a BP report from a few days ago:
"Joe Musgrove, RHP, Astros (Lancaster, High-A): 6 IP, 7 H, 2 R, 2 ER, 0 BB, 9 K. Musgrove has a 54-1 K-BB ratio thanks to an impressive repertoire that features a cutter/slider hybrid, a fastball that hits 95 and a curve that shows bat-missing potential. At 6-foot-5 and 230 pounds, he has a strong, starter body, and if the change comes around he can work his way into a mid-rotation profile. He's likely not long for Lancaster."
Syndergaard 2.0!