The Philadelphia Phillies demoted rookie right-hander Mick Abel, who has struggled since he struck out nine in his major league debut, to Triple-A Lehigh Valley.

This article was originally published on www.si.com/mlb/phillies as Phillies Send Mick Abel Back To Triple-A After Two Poor Outings.

Walker will start Tuesday at San Francisco. He could pitch four innings or so. Then, during the All-Star break, the Phillies will reassess.