Former Dallas Cowboys star Michael Irvin announced on Instagram that he is undergoing tests for throat cancer.
The NFL world has rallied around Irvin, offering prayers and support.
Irvin played for the Cowboys from 1988 to 1999 and was inducted into the Pro Football Hall of Fame in 2007.
He is currently an analyst for NFL Network.
Irvin has been open about his struggles with addiction and has been sober since 2006.
Irvin has not yet released any further information about his condition.