Turnbull (lat) will throw a live batting practice session Friday, Destiny Lugardo of Phillies Nation reports.
Turnbull threw an up-and-down bullpen session Monday, clearing the way for him to face hitters for the first time since he was diagnosed with a right lat strain in late June. The Phillies aren't giving up hope that Turnbull could make it back later this month as a reliever, but he can't afford any hiccups.