With Hart out, the Pirates now have one fewer starting candidate should they continue to need spot starters in the big league rotation. Hart was likely the next in line for a callup, though he has continued to battle through command issues in Triple-A this season.
In his five appearances for Indianapolis, Hart has allowed 13 earned runs on 18 hits in 17 1/3 innings. He has walked 11 and struck out 19. Efficiency has continued to be an issue, much as it was this spring when Hart lost out on a chance to earn the fifth spot in the Pirates' rotation.
With Hart on the DL, right-hander Michael Dubee was promoted from Double-A to serve as an extra arm in Indianapolis' bullpen. In 9 2/3 innings with Altoona, Dubee allowed just one run on seven hits.