What Michael Conforto can learn from Clint Frazier’s mistake

Clint Frazier was unaware the Mets’ Michael Conforto had been sent to the seven-day injured list after suffering a concussion when he collided with Robinson Cano as they chased a popup on Thursday. Frazier, however, had some advice for his Mets counterpart when he heard the news. “Do what you need to do,’’ Frazier said…