OU football: Grant Calcaterra returning to football, entering transfer portal
Grant Calcaterra - 2019 - Football - University of Oklahoma
OU tight end Calcaterra retires from football because of concussions
OU football notebook: Tight end Grant Calcaterra to miss third consecutive game
Grant Calcaterra - Football - SMU Athletics
Whicker: Grant Calcaterra leaves football with a purple heart and, so far, a clear head – Orange County Register
Oklahoma WR/TE outlook for 2019: Talent abounds for Sooners, but who will replace Marquise Brown's production?
Former Oklahoma Sooners TE Grant Calcaterra will now play for Auburn Tigers - Sports Illustrated Oklahoma Sooners News, Analysis and More
Oklahoma football: OU's 2019 roster reflects nationwide recruiting pull
OU football: Grant Calcaterra retires from football following multiple concussions
From Sooner to SMU, Mordecai starts with record 37 TD passes