The former world No. 1 stormed out of the first round after smashing a tee box marker in visible frustration and then withdrawing due to illness, the New York Post reports.
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The five-time major champion opened the day poorly, carding triple bogeys on the fifth and seventh holes at Maridoe Golf Club and sitting at six-over par through the front nine.
And that seemingly angered him.
His boiling point came on the ninth hole after an errant drive where Koepka angrily slammed his club into the ground.
He then struck the tee box marker and it flew toward the crowd, although it appeared that no one was hurt.
Koepka was playing alongside Aussie Cam Smith, who is seen walking off the tee as the American blows his top.
Following that outburst, Koepka continued to struggle, bogeying the 10th and 13th holes.
He ultimately withdrew from the tournament during the 14th hole, citing an apparent illness.
LIV Golf announced that Luis Carrera would replace him in the Smash GC team, and noted that while Koepka鈥檚 individual score would not count, he could still return to contribute late this weekend if he chooses to.
Prior to switching to LIV, the Florida native enjoyed a golden run on the PGA Tour.
He reached No. 1 in the world rankings as he claimed the US Open in 2017 and 2018 plus the PGA Championship in 2018 and 2019.
He added another PGA title in 2023, but Koepka recently acknowledged the past few months had been difficult.
He missed cuts at both the Masters and PGA Championship and has now gone nine consecutive majors without a top-10 finish.
鈥淔rom the first weekend in April until about [the beginning of June], you didn鈥檛 want to be around me,鈥 Koepka said earlier this month.
鈥淚t drove me nuts. It ate at me. I haven鈥檛 been happy. It鈥檚 been very irritating.鈥
As LIV Golf Dallas moves into the weekend, some eyes will be fixed on whether Koepka will return to the course following the incident and his withdrawal.
Koepka, who turned 35 in May, reached three years competing on the LIV Golf circuit this month.
This article originally appeared in the New York Post and was reproduced with permission