Eflin, who is sidelined at Triple-A Lehigh Valley with an elbow injury, will see a specialist Tuesday in Philadelphia, Matt Breen of The Philadelphia Inquirer reports.
He was placed on the minor-league DL on Sunday because of the injury. This season, Eflin has posted a 6.13 ERA, 1.43 WHIP and 25 strikeouts in 47 innings for the Phillies -- numbers that recently got him optioned back to Triple-A.