Brooks Koepka has released a first look at his photoshoot for the upcoming ESPN Body Issue: Golf Digest (@GolfDigest)

During a Twitch livestream earlier this week, however, 26-year-old pro golfer Bryson DeChambeau took the opportunity to say he wasnt so impressed with Koepkas physique, noting the star golfer's lack of a six-pack."I don't think his genetics even make him look good," DeChambeau said. "Did you see the Body Issue? He didn't have any abs. I can tell you that. I got some abs. I dont know if thats against regulation here on Twitch, but I wouldI dont think I can."

Bryson goes after Brooks physique!! Eric Patterson (@EPatGolf)

DeChambeau, its worth noting, recently completed involving lots of pullups, farmers walks, and other lifting exercises that helped him pack on more than 25 pounds of musclereportedly going from 195 to 220 pounds. That dramatic transformation inspired Golfweek to brand him golfs version of Lou Ferrigno. DeChambeau looks like he could flex and rip through his golf shirt, they wrote.

DeChambeaus accomplishments in the gym, however, havent yet translated to a major title win, and it's clear that fact wasnt lost on Koepka in his pitch-perfect response to DeChambeaus dig as he reignited their year-long feud .

You were right @b_dechambeau I am 2 short of a 6 pack! Brooks Koepka (@BKoepka)

You were right @b_dechambeau I am 2 short of a 6 pack! he wrote in a tweet captionone that appeared directly above a photo of his four championship trophies, which, again, include a pair of U.S. Open titles. From the looks of things, Koepka could be soon be on his way to adding even more hardware to his shelf: On Thursday, the World No. 1 returned from a three-month injury hiatus to shoot a bogey-free round of golf at the Abe Dhabi HSBC Championship. The achievement, it turned out, came with a karmic bonus: Dechambeau and his six-pack abs missed the cut.