2015 is the Year of the Tight End, and Rob Gronkowski is leading
2015 NFL Player Rankings: Tight Ends
FILE - In this Jan. 18, 2015, file photo, New England Patriots
Gronkowski announces retirement again but is 3x the charm
Big tight end Rob Gronkowski fights off injuries to bring Patriots
Tom Brady gets very honest about missing Rob Gronkowski
Rob Gronkowski - Wikipedia
Rob Gronkowski retires: His impact and legacy - Sports Illustrated
Gronk is great, and the Bills know it
Rob Gronkowski retirement: Gronk made the Patriots human. Now what?
Brady-to-Gronkowski connection proves lethal for Texans
Gronk thrilled to be part of playoffs