Wilkie was suspended for 50 games June 2 for using a banned substance, which Wilkie described as Spice, a synthetic form of marijuana.
He was eligible to return to the team last week after staying in shape pitching in Venezuela. Wilkie last pitched for the Triple-A Syracuse Chiefs on May 29, and was 0-2 with a 4.76 ERA in 18 games this season.
Wilkie was signed as a non-drafted free agent out of George Washington University in June 2006. He had 11 saves for Single-A Hagerstown in 2007 and in 2008 crafted 2.08 ERA in 46 games as a reliever for high Single-A Potomac. Wikie was an All-Star in 2009 and 2009. He had accumulated 29 saves since 2009 with the Chiefs.