June 10, 2025 8:08 PM : Feltner (back) completed a full bullpen session Monday, MLB.com reports.
Analysis: Feltner has been conducting his throwing program at the Rockies' spring training facility in Arizona since being pulled off his rehab assignment with Triple-A Albuquerque in late May. The right-hander will likely throw at least a couple more side sessions before advancing to facing hitters and eventually heading back out on a rehab assignment. Given that he's been on the shelf since May 2 due to the back issue, Feltner may need more than one rehab start before he's cleared to rejoin the Colorado rotation, possibly in late June or early July.