Gronkowski left Sunday's game late in the fourth quarter to head into the locker room to have x-rays done on his forearm—which is apparently broken.
Early indications are suggesting that Gronk will be out four-to-six weeks, according to Ian Rapoport of NFL Network.
Gronkowski finished Sunday's game with seven receptions for 137 yards and two touchdowns.
Aside from quarterback Tom Brady, Gronkowski is arguably the most valuable player on New England's roster—this is probably the most devastating news that the Patriots could have received following their absolute domination of the Colts.
Gronkowski has now recorded 10 touchdown receptions in each of the last three seasons, which is an NFL record, as he became the first player to record double digit touchdown receptions in three consecutive seasons.
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