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.
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.