Daniel Suarez speaks on why he didn't fight Ross Chastain at Las Vegas

A dust-up between NASCAR Cup Series drivers Ross Chastain and Daniel Suarez was one of the major storylines from Sunday's Pennzoil 400 at Las Vegas Motor Speedway. 

Chastain and Suarez finished 17th and 18th, respectively, in Sunday's race and accosted each other on pit road after contact on the cool-down lap. 

While a fistfight didn't ensue on pit road, that may have been more to Suarez holding back than anything. In a Tuesday interview with SiriusXM NASCAR Radio, Suarez revealed why he didn't fight Chastain, who is his former teammate at Trackhouse Racing. 

Why Daniel Suarez didn't fight Ross Chastain

Suarez said that he thought he and Chastain "were in a pretty good place" in regard to their racing etiquette before Sunday.

"We've been racing together quite a bit," Suarez. "Stuff is going to happen. That's okay. That's racing, I don't think it's personal."

Suarez said what happened on the cool-down lap was what frustrated him and led him to confront Chastain. Chastain shoved Suarez, though Suarez did not retaliate.

"The Daniel from three years ago probably would've kicked his butt," Suarez said. "To punch him and put him on the ground, it was going to cost me $50,000. Sponsors never like that. Sponsors like exposure, but they don't like bad PR. If I went to fight Ross, and he knows this, it's not going to last five seconds. I wasn't going to gain anything."

As the Cup Series heads to Darlington this week, all eyes will be on Chastain and Suarez to see if any emotions from Las Vegas carry over. 

Quotes provided by SiriusXM NASCAR Radio.