Tennessee's Pat Summitt, the winningest basketball coach in NCAA history, filed for divorce after nearly 27 years of marriage.

Irreconcilable differences were cited in the petition filed Wednesday in the Knoxville suburb of Maryville. She and husband R.B Summit will have been married 27 years on Aug. 23.

The couple has one child, Tyler, who will be 17 next month. The petition said there are no custody issues and the teenager is living with his mother. R.B. Summitt is a banker in Sevierville.