IRVING (AP)  Not even cancer can keep former NFL coach Buddy Ryan from being in the stands when his sons coach against each other Sunday night in the prime-time opener between the Dallas Cowboys and New York Jets.

Cowboys defensive coordinator Rob Ryan said Monday his dad was diagnosed last week with cancer in his gland that spread to his neck.

Having already beaten the disease several times, the elder Ryan felt comfortable telling doctors to postpone an operation until he returns from being in the Meadowlands to see Rob and the Cowboys play against Rex and the Jets.

Buddy Ryan was defensive coordinator of two Super Bowl champions and later was head coach of the Eagles and Cardinals.

(Copyright 2011 by The Associated Press. All Rights Reserved.)