Eflin was placed on the 7-day disabled list at Triple-A Lehigh Valley with an undisclosed injury, Greg Joyce of The Easton Express-Times reports.
After struggling in his role as the Phillies' fifth starter, Eflin was demoted to Lehigh Valley on May 28 and picked up an injury in his first turn with the Triple-A club. The Phillies have an opening in the rotation after Vince Velasquez was diagnosed with a minor flexor strain, but even before suffering the injury, it didn't sound as though Eflin was under serious consideration to rejoin the big club. Instead, the Phillies will call up Nick Pivetta from Triple-A to join the rotation Monday when Velasquez's turn comes up.