Gronkowski announced his decision via a post on Instagram Sunday, saying that a few months shy of his 30th birthday "it's time to move forward and move forward with a big smile."
Latest news headlines covering the entire state of Arizona, including Phoenix metro, Tucson, Yuma, Flagstaff, Lake Havasu, Prescott and the Grand Canyon.
Most recent headlines for Phoenix, Paradise Valley, Ahwatukee and Maryvale.
Latest headlines for Apache Junction, Chandler, Gilbert, Mesa, Queen Creek, Scottsdale, Fountain Hills, Tempe, San Tan Valley, Gold Canyon and Sun Lakes
Latest headlines for Avondale, Buckeye, Buckeye Valley, Glendale, Goodyear, Tolleson, Laveen and Litchfield Park
Latest headlines for Anthem, Carefree, Cave Creek, Deer Valley, Peoria, New River, El Mirage, Sun City, Sun City West, Surprise and Waddell
Latest headlines for Sedona, Flagstaff, Prescott, Show-Low, Payson, Williams, Kingman, Lake Havasu City and the Grand Canyon
Latest headlines for Tucson, Bisbee, Tombstone, Douglas, Yuma and Sierra Vista