Kirk Herbstreit pulled back the curtains on why he was so emotional after Ohio State’s national championship win over Notre Dame on Monday night.

The former Ohio State player broke down following the Buckeyes' National Championship victory on Monday and has since claimed that a 'tough year' was the reason behind it

Kirk Herbstreit's wife, Alison Butler, was recently diagnosed with breast cancer. This revelation came shortly after his emotional appearance during the College Football Playoff National Championship broadcast.

Kirk Herbstreit reached for a tissue and got emotional when talking about the Buckeyes' win on ESPN on Monday night.

Look: ESPN analyst Kirk Herbstreit reveals why he got emotional on Sports Center following Ohio State football's national championship:

Kirk Herbstreit revealed his wife's cancer diagnosis while talking about his emotional moment after the national title game.

Kirk Herbstreit wasn’t able to hold back his emotions after Ohio State won the national championship on Monday night. A day later, Herbstreit revealed there was more happening in his life that previously had not been shared widely.