When Miami Dolphins coach Mike McDaniel said Monday he welcomed an NFL and NFL Players Association investigation, he was right on one count.
“We have nothing to hide,’’ he said.
From the moment quarterback Tua Tagovailoa hit his helmet on the field Sept. 25 against Buffalo, shook his head, collapsed to the ground and needed help getting off the field, the Dolphins followed concussion protocol and what doctors counseled, according to two league sources.