Super Bowl winner Rob Gronkowski retires from the NFL
Rob Gronkowski Retiring From NFL
The NFL has lost a captivating superstar with the retirement of Rob Gronkowski
Why I believe Rob Gronkowski will eventually return to the New England Patriots
Rob Gronkowski announces retirement from NFL AGAIN in emotional Instagram post months after Tom Brady teased new career
Rob Gronkowski Announces Retirement From The NFL – Hollywood Life
Rob Gronkowski - Wikipedia
Gronk unleashed: Gronkowski sets course for retirement fun
Rob Gronkowski announces his second retirement from playing football
A moment with Ronaldo made Brady fans think he was coming out of retirement : NPR