Megill is expected to start Thursday's Opening Day matchup against Washington, Mike Puma of the New York Post reports.
Max Scherzer (hamstring) won't be ready to pitch until Friday, so Megill is slated to take the mound on Opening Day after winning a rotation spot during spring training. Megill made 18 starts for the Mets last year and posted a 4.52 ERA, 99:27 K:BB and 1.28 WHIP in 89.2 innings.