I have not heard that Hagenow is or was injured. With that being the case, I am going to do the bad thing and jump to the conclusion that we're not using him very well.
Prior to Tuesday Hagenow hadn't pitched since his start against LSU on 4.10. So, he went 17 days without pitching. They then pitched him against EKU and he went 0.1 innings, gave up a hit and an unearned run and threw just 16 pitches. So, not sure why he hasn't gotten more chances. Heck, he should have probably pitched this past weekend in one of those big losses. Allow your 'stud,' to play in front of his home crowd, and likely wouldn't have hurt our chances at winning.
Not sure when UK will use him again... no midweek and we play Florida (who just took 2 of 3 from Vandy) this weekend, so it seems unlikely that UK would use him a lot this weekend. Would just like to see us use him and get him through the growing pains, especially in some games or situations where we know it is just for the experience.