Former Notre Dame football coach Lou Holtz on Monday endorsed Republican presidential front-runner Donald TrumpDonald John TrumpMcCabe says he was fired because he 'opened a case against' Trump McCabe: Trump said 'I don't care, I believe Putin' when confronted with US intel on North Korea McCabe: Trump talked to me about his election victory during 'bizarre' job interview MORE.

"I wholeheartedly endorse Donald Trump as the next president of the United States. There are nothing but winners in Indiana," Holtz said in a video posted on Twitter.

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"The main reason I'm endorsing him: I've played his golf course, I've stayed in his hotel. He does nothing but go first class in everything. He wants this country to be first class as well."

Trump tweeted out the video and thanks Holtz for his support.

"Honored to have received the endorsement of Lou Holtz — a great guy!" Trump tweeted.

The endorsement comes ahead of the Indiana primary on Tuesday, where Trump is polling ahead of his two competitors. According to the RealClearPolitics average of polls, Trump has a 9.3-point lead over rival Ted CruzRafael (Ted) Edward CruzEl Chapo's lawyer fires back at Cruz: 'Ludicrous' to suggest drug lord will pay for wall Democrats have a chance of beating Trump with Julian Castro on the 2020 ticket Poll shows competitive matchup if O’Rourke ran for Senate again MORE.

It's not the first high-profile endorsment from a sports figure in the state. Trump was also endorsed by former Indiana University basketball coach Bobby Knight.