Leaked video from PGA Championship shows just how much Brooks Koepka doesn't like Bryson DeChambeau in golf's best and ugliest rivalry

• Brooks Koepka and Bryson DeChambeau do not particularly like each other.
• The years-long feud rekindled once again over the weekend at the PGA Championship.
• A leaked video shows Koepka rolling his eyes and losing his train of thought near DeChambeau.

The best rivalry in golf added another chapter to its glorious legacy thanks to a video that leaked from the PGA Championship over the weekend.

During an interview with the Golf Channel reporter Todd Lewis, Brooks Koepka was overtaken by his disdain for Bryson DeChambeau as his rival walked by in the background.

Koepka rolled his eyes and attempted to hold back his anger but appeared so caught up in his loathing for DeChambeau that he lost his train of thought in the middle of his response.

"I didn't putt well, but I don't think many guys were going to putt well with this wind. It's very tough. I don't know what the other guys have said - I just found it difficult to read sometimes," Koepka said. "Sometimes, um - I lost my train of thought, yeah, hearing that bulls---."

Given his mention of "hearing that bulls---," it sounds like what really sent Koepka over the edge was the rattling of DeChambeau's metal spikes as he walked past the interview. But the intensity between the two players is built on a history that goes back well past the weekend and a particular pair of shoes DeChambeau was wearing.

Koepka has disliked DeChambeau's "whole deal," for lack of a better term, for some time now.

Sparks first flew between the two players in 2019 when Koepka fired shots at DeChambeau for his slow play.

"I just don't understand how it takes a minute and 20 seconds or a minute and 15 to hit a golf ball. It's not that hard," Koepka said on the "Golf Monthly Clubhouse" podcast after a clip of DeChambeau taking an especially long time to line up a shot went viral.

"It's always between two clubs. There's a miss short; there's a miss long. It really drives me nuts, especially when it's a long hitter because you know you've got two other guys or at least one guy that's hitting before you, so you can do all your calculations. You should have your numbers."

From there, things only escalated.

After Koepka appeared in the Body Issue of ESPN The Magazine, DeChambeau mocked his lack of abs.

Koepka responded with a shot of his trophy case, showing off his four major wins and joking that he was, in fact, two short of a six-pack.

When DeChambeau entered the 2020 restart with a brand-new physique, Koepka was unimpressed.

He went as far as to not so subtly imply that DeChambeau had used steroids to bulk up, making his point with a GIF from the HBO show "Eastbound and Down."

That brings us back to the leaked video from the PGA Championship.

Even though Koepka and DeChambeau have not directly gone at each other or been paired together on the golf course since their recent rise in tensions, it's clear that the two men still aren't on great terms.

After the clip of Koepka rolling his eyes began to make the rounds on social media on Monday night, DeChambeau appeared to lean into the bit even more, posting another somewhat cringey video of himself working out.

"While you rolled your eyes, I studied the blade," the video suggested.

Golf has a great history of rivalries, but no two players have ever shared a hate this strong while also being as perpetually logged on as DeChambeau and Koepka.

Eventually,these two will be paired up on the course again and can finally go at it head-to-head in what will be a can't-miss round of golf.

Until then, there's more than enough disdain between the two players to keep their rivalry going, even if it only emerges through eye rolls and subtweets.