Nationals' Tony Sipp: Could be activated Monday

Sipp (oblique) could be activated to begin the Nationals' series Monday against the Mets, Jamal Collier of MLB.com reports.

Sipp threw an inning Saturday night at High-A Potomac and apparently had no setbacks. As a result, he could be activated as early as Monday. Sipp struggled in the early portion of the season, recording a 6.00 ERA and 1.44 WHIP across nine innings.