Boxberger (oblique) is scheduled to play catch Monday, Roger Mooney of the Tampa Bay Times reports.
It will mark Boxberger's first activity since May 31, when he aggravated his oblique injury and landed back on the disabled list. Boxberger's four-to-eight week recovery timetable means he probably won't be back until around the All-Star break, however, but the fact that he's throwing again suggests he's making sound progress.