Other than Jacob deGrom, who the Mets are optimistic will come off the disabled list on Sunday to make a start, the rotation has not been dominant. Noah Syndergaard may be able to throw a fastball 100 miles an hour, but hitters are proving they aren’t intimidated by it. Zack Wheeler is showing progress, but remember he was just learning how to pitch effectively in 2015 when he needed Tommy John surgery. Steven Matz has had his learning curve as a major-league pitcher turned and twisted by injuries. And Jason Vargas seems to be struggling to recapture the form he had under Eiland last season in Kansas City.