Mack, less than a half into his Bears tenure, had just sauntered into the end zone after intercepting DeShone Kizer.
Miami led 7-3 when the game was suspended for almost two hours late in the first half.
Aaron Rodgers has returned for the Green Bay Packers in the third quarter after being taken off the field on a cart because of a knee injury.
Chao added that Rodgers may just be heading to the locker room for precautionary X-Rays, and said the Packers quarterback could still return with a brace on his knee. The Packers were trailing 20-0. Rodgers grabbed at his leg, tried to get back up, and went back down again before he was finally able to limp off the field and into the blue medical tent on the sidelines.
Rodgers then walked to the cart that took him up the Lambeau Field tunnel.
Grant's touchdown triggered a late flurry of big plays in a season opener that was lackluster for the first six hours.
This is the LAST news any fan of the Green Bay Packers - or of lovely, fantastic football - would ever want to hear. He missed nine games last season with a broken right collarbone, preceding Green Bay going 7-9 and missing the playoffs for the first time in nine seasons.