Megill will start the Mets' Opening Day matchup against the Nationals on Thursday, Tim Healey of Newsday reports.
The Mets were trending toward awarding the Opening Day start to Megill since Max Scherzer (ankle) won't be ready to pitch Thursday, and manager Buck Showalter confirmed the news Wednesday. Across two appearances (one start) this spring, Megill allowed five hits and five walks while striking out seven in 6.2 scoreless frames.