Golf greats Tiger Woods and Phil Mickelson will go head-to-head in a winner-takes-all $9m (£7m) exhibition match in Las Vegas.
The Americans, who have 19 major championship titles between them, will face off in the 18-hole event at Shadow Creek Golf Course on 23 or 24 November.
The contest, which coincides with Thanksgiving weekend in the US, will be screened on pay-per-view.
Woods confirmed “The Match” on social media, saying: “It’s on”.
Mickelson, who has attracted almost 100,000 followers in less than 24 hours on Twitter, replied to Woods, saying: “I bet you think this is the easiest $9M you will ever make.”
The possibility of a duel between the former Ryder Cup team-mates has been mooted repeatedly down the years.
Woods, a 14-time major winner, has won over £88m prize money on the PGA Tour in comparison to Mickelson’s £68m.
“It’s an opportunity for us to bring golf to the masses in prime time during a period where we don’t have much going on in the world of golf,” Mickelson told ESPN.
“It’s a way to show a side you don’t normally see by having us mic’d up to hear some of the interaction between us.”
Despite the good-natured approach, there is no chance of the duo sharing the purse, with Mickelson saying that the event had to be winner-takes-all.
“If you [don’t] do that, it undermines it,” Mickelson said. “The whole point is the winner-take-all thing. That’s the exciting part about it.”
Former world number one Woods returned to golf this year after missing most of the previous two years due to recurring back problems.
The 42-year-old finished tied for sixth at The Open and was second at the PGA Championship earlier this month while 48-year-old Mickelson missed the cut.