Video: Gronkowskis a band of NFL brothers

Gronk Nation invaded ESPN's "First Take" this week. The brothers from suburban Buffalo -- New England Patriots tight end Rob Gronkowski, Denver Broncos tight end Dan Gronkowski and Dallas Cowboys fullback Chris Gronkowski -- talked about what it's like to be simultaneously playing in the NFL.

On Wednesday, their youngest brother, Glenn Gronkowski, signed a letter of intent to play at Kansas State in the fall.

The NFL brothers gave their Super Bowl predictions. Rob, who played his senior prep season in Pittsburgh, went with the Steelers. The others picked the Green Bay Packers.