So far, the only athletics-related speaker who's confirmed they'll speak at the convention is UFC President Dana White.
Bloomberg reported boxer Mike Tyson might give a speech, which Trump denied. Patriots quarterback Tom Brady said he was a friend of Trump's, but ESPN's Adam Schefter reported Brady won't be speaking, either.
Lots of major Republican politicians have passed on not only speaking at the convention but attending it altogether. Notable figures like Trey Gowdy, Sarah Palin and Marco Rubio will all be absent when the convention kicks off on July 18.