Phillies interim manager Don Mattingly said Wednesday that Keller (forearm) is expected to return before the All-Star break, Matt Gelb of The Athletic reports.
Keller threw a live batting practice session Tuesday and could make a rehab appearance Friday. The right-handed reliever has been sidelined since mid-June with forearm tendinitis, and he might require just the one rehab outing before being reinstated from the 15-day injured list.