Take a bow Ryan Feltner, you are officially a slump buster. The Rockies right-hander pitched a gem Thursday night and got an early boost from C.J. Cron in a 5-0 victory over the Phillies at Citizens Bank Park. The victory snapped Colorado’s eight-game losing skid, its longest losing streak since dropping nine straight from Aug. 27-Sept. 4, 2019. Feltner has good stuff. The metrics say so, as do…