A lot is being made about Manny Parra's inability to pitch through the sixth inning of games. I think that criticism is very shortsighted.
A lot of research has been done on the devistating effects of overworking young pitchers. Parra is only 25 years old, and less than three years removed from surgery to repair a torn rotator cuff in his left shoulder. His career high in innings is 139 when he was 20 years old and in A ball. If he makes 32 starts this season averaging six innings each he would hit 190 innings - probably far too great a workload for him.
Parra has hit the 100 pitch mark only once in his five starts and is averaging fewer pitches per start than any other pitcher on the team:
This may be a conscious effort on Ned Yost's part to keep Parra's workload in check, rather than an inability on Parra's part to pitch deep into games. The Brewers (and fans) should be happy with five good innings out of Parra. If more is demanded of him, there will likely be an unhappy trip to the DL.