WASHINGTON -- The NL East-leading Phillies sent reliever Scott Eyre back to Philadelphia on Wednesday to have his ailing left elbow examined.
Eyre is 2-1 with a 1.61 ERA in 39 games.
Manager Charlie Manuel said Jamie Moyer would start in place of J.A. Happ in Saturday's game against New York. Happ was scratched from Monday's start with an oblique strain.
The Phillies promoted left-hander Sergio Escalona and first baseman Andy Tracy from the minors, and they joined the team for Wednesday night's game at Washington.
Escalona was recalled from Double-A Reading for his sixth stint with Philadelphia. In six games, he is 1-0 with a 2.84 ERA. He was 2-3 with a 3.13 ERA and 14 saves in 47 games with Reading and Triple-A Lehigh Valley.
The Phillies purchased Tracy's contract from Lehigh Valley, where he hit .254 with 26 home runs and 96 RBIs. The 35-year-old has played in the majors with Montreal, Colorado and the Phillies.
To make room for Tracy on the 40-man roster, right-handed pitcher Rodrigo Lopez was released.
In other injury news, right-handed pitcher Clay Condrey, on the 15-day disabled list since July 23 with a left oblique strain, is working out in Philadelphia. The team hopes to get him a rehab start soon.
Utilityman Greg Dobbs, on the 15-day DL with a strained right calf, is working out at the team's minor league headquarters in Clearwater, Fla.