Ethier returned to the Dodgers' lineup Friday after missing 11 games with a strained left oblique. He has gone 7-for-18 with a home run and five RBIs since the All-Star break.
The right fielder is 0-for-11 with five strikeouts in his career against Philadelphia starter Cliff Lee and manager Don Mattingly said Wednesday would be the perfect day to give Ethier some rest.
"This gives him almost three days," Mattingly said. "Today, then tomorrow and then we have a night game, so it's a perfect opportunity for him."
Mattingly said Ethier feels good and the team was encouraged by a hard check swing in the eighth inning Tuesday night.