The Derek Shelton Show, should Pirates fans be worried about the Hayes back situation?

Hour three with Joe Starkey and Paul Zeise. Shelton pointed to pitching as a big reason why the Pirates are on a hot streak but doing the little things right is the key reason. Shelton mentioned Bryan Reynolds and Nick Gonzales as clutch players. Derek Shelton stated that Ke'Bryan Hayes is healthy, but the back injury has a chance to continue to linger. Joey Bart is becoming a bigger part of the Pirates and could be here for a while. What does it mean for Henry Davis and Endy?