Tony Sparano, an NFL coach for nearly two decades, has died at age 56.
Sparano had been on the NFL sideline for 18 years including head coaching gigs with the Miami Dolphins and Oakland Riders. He was expected to enter another season as an assistant with the Minnesota Vikings when training camp began on Tuesday.
He was discovered unconscious at his home on Sunday morning, according to an ESPN report.
Sparano complained about chest pains this weekend and went to hospital Thursday. Doctors did tests, but released him Friday. He and his wife, Jeannette, were about to leave for church Sunday morning when she found him unconscious in their kitchen. She tried CPR, but he could not be revived.
Sparano is survived by his wife, Jeanette, his two sons and four grandchildren.