RACHEL MARTIN, HOST:
Good morning. Sad news for fans of the New England Patriots - star tight end Rob Gronkowski is calling it quits. After four Super Bowls, the Gronk says it's time to retire. In a post online, the 29-year-old thanked his fans and teammates and said he's looking forward to what comes next. And there's probably no hurry in that regard. He got $54 million for the last six years. And according to CNBC, Gronkowski has lived off money from endorsements and hasn't touched a dime of his NFL salary. Transcript provided by NPR, Copyright NPR.