Ryan Feltner Injury: Suffers setback

Feltner didn't make his scheduled rehab start with Triple-A Albuquerque on Tuesday after his back tightened up, MLB.com reports.

Feltner was supposed to begin his rehab assignment this week, but he is now considered day-to-day. He hasn't pitched in game action since April 28, so he'll likely need several rehab appearances before being activated.