IndyCar driver gets annoyed with opponent during Indy 500 practice: 'F------ idiot'

"Rasmussen is such a f------ idiot," Siegel said.

Rasmussen was already on Siegel's "idiot" list before that, but Rasmussen is in a league of his own on Siegel's list now. 

"He's already on the list of idiots, but there are too many of them, but he's like, above everyone else," Siegel said. 

The FOX broadcast team sympathized with Siegel's frustration.

"I can feel it based on what I just saw, that was throwing caution to the wind for sure right there," the announcers said. 

On Saturday, the IndyCar qualifications take place throughout the day. The first qualifications begin at 11 a.m. ET on FS1, and then at 1:30 p.m. ET the qualifications are aired on FS2. The last part of Saturday's qualifications will air on FOX at 4 p.m. ET.

Throughout the day on Saturday during Full-Field Qualifying, the fastest 30 cars will secure provisional spots. Positions 13-30 are locked in, and those spots are unable to re-qualify on Sunday. 

In the Top 12 Qualifying on Sunday, that determines positions 7-12. The cars will run in order from slowest to fastest based on Saturday's results. 

The fastest six times advance to the Firestone Fast Six to compete for the pole.

Tensions are already running high in practice, and everything will be turned up a notch once the qualifying begins on Saturday.