Megill wasn't available to pitch in Monday's game against the Athletics due to oblique tightness, Todd Rosiak of the Milwaukee Journal Sentinel reports.
Megill is slated to play catch before Tuesday's contest, and if all goes well, he's expected to be available to pitch. The 32-year-old gave up two earned runs during his last outing Friday against the Rockies to increase his ERA to 4.70 through 23 frames, though he still boasts a career-best 1.62 FIP.