Noah Syndergaard, Jacob deGrom and Steven Matz are a lock to be in the team's starting rotation when it begins their 2017 season in exactly two weeks...
Matt Harvey should be a lock, but has struggled this spring after last year's season-ending surgery to correct Thoracic Outlet Syndrome. I expect he'll make the Opening Day roster, though I do think there's a small chance he stays back in St. Lucie where he'd begin the season in extended spring training and on the disabled list.
Meanwhile, Seth Lugo, Robert Gsellman and Zack Wheeler have all pitched well enough to be considered for the rotation's final spot.