Heated exchange between Kevin Harvick and Brad Keselowski after Atlanta Nationwide Series race

Kevin Harvick and Brad Keselowski traded angry words after Saturday night's controversial finish to the NASCAR Nationwide Series race at Atlanta Motor Speedway.

Harvick led 157 of Saturday night's 195 lap race but accused Keselowski of tossing a water bottle out of his car to bring out a caution that erased his huge lead.

Despite the ESPN telecast repeatedly showing the bottle being hurled out of Keselowski's car, NASCAR maintained the caution was actually for a piece of debris elsewhere on the track.

But in the end Harvick wound up getting passed by Ricky Stenhouse Jr. on the final lap of the race.

The furious Harvick blamed Keselowski for intentionally causing the yellow. After the two completed their media center obligations, Harvick told Keselowski “I hope you sleep well tonight."

Keselowski was unaware of why Harvick was so angry.

“I didn't know there was a yellow for a water bottle to begin with,” Keselowski said after speaking with Harvick. “That was the first I heard of it when Kevin came by.”