NFL star Rob Gronkowski announces his retirement - KAKE
Why Now: What Got Rob Gronkowski Out of Retirement
New England Patriots tight end Rob Gronkowski announces retirement, New England Patriots
Rob Gronkowski retires: New England Patriots tight end steps away from NFL – The Denver Post
Rob Gronkowski retires: His impact and legacy - Sports Illustrated
Gronk considering retirement, move to Hollywood, Sports
Rob Gronkowski on retiring from NFL at age 29: 'I didn't even want to negotiate' - Good Morning America
Rob Gronkowski retiring from the NFL again
Rob Gronkowski was very close to signing with the Buffalo Bills for this season
Is Rob Gronkowski Returning To The NFL? It's Still Possible: Report
Report: Buffalo Native Rob Gronkowski Almost Signed With The Buffalo Bills
Patriots TE Rob Gronkowski announces retirement