Former President Donald Trump’s youngest son, Barron, received a standing ovation from 45,000 Trump supporters at his father’s renowned golf course in Doral, Florida.

The former president was joined by a number of Florida Republicans, including Senators Rick Scott and Marco Rubio, a number of U.S. representatives from the Florida delegation, and a number of additional key political figures in the sunshine state, for Tuesday’s highly anticipated rally. Tuesday’s event has drawn increased viewership due to the possibility of Trump’s long-awaited vice-presidential nominee being revealed.

Trump was also joined by members of the Trump family, including his oldest sons Donald Jr. and Eric, both of whom addressed the crowd before the former president took the stage shortly after 7 p.m. Eastern Time.

As Trump was giving shout outs to lawmakers and family members in attendance, the presidential frontrunner paused to introduce Barron, 18, for the first time at a political rally. “And a very young man, this is a young man, he just turned 18,” Trump said, at which point supporters began to stand up and cheer.

“Oh, look at this. A very young man who is now going to college, got into every college he wanted to, and he’s a very good guy I’ll tell you. You know I’m not allowed to call them boy but he is my boy he’s my boy they’re all my boys right? When you have sons they can be any age they’re your boy they’re always going to be and he’s a very special guy. Barron Trump,” the former president introduced before asking his youngest son to stand up.

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During Tuesday night’s rally, Trump challenged “sleepy Joe” to another debate later this week and offered him a chance to “redeem himself.”

“Let’s do another debate this week so that sleepy Joe Biden can prove to everyone all over the world that he has what it takes to be president. But this time it will be man to man, no moderators, no holds barred,” the former president declared.

Trump also challenged his chief political rival to settle the debate over their respective golf skillsets.

“And in the debate, Sleepy Joe also declared that he wanted to test his skills and stamina against mine on the golf course. Can you believe this?” Trump told the Florida crowd.

“That’s why this evening, I am also, and this is in honor of you and everybody here, there’s 45,000 people. That’s a lot of people. I’m also officially challenging Crooked Joe to an 18-hole golf match right here. On Doral’s Blue Monster, considered one of the greatest tournament golf courses anywhere in the world, one of the great courses of the world,” the former president went on to say.