Australia's Jason Day will lead out the International team as they begin their attempt to win the Presidents Cup for the first time in 26 years.

Day will partner South Korea's Byeong Hun An in the opening four-ball at Royal Montreal, lining up against world No.2 Xander Schauffele and Tony Finau.

Captain Mike Weir is then sending out the other Australians in the team, Adam Scott and Min Woo Lee, who will be up against Collin Morikawa and Sahith Theegala.

"The Australians, Min's obviously a powerful player and so is Adam," Weir said.

"The guys just get along really well … Adam's mentored him a little bit as well and they're just a great fit, they just really like each other."

Lee was relishing the prospect of his first Presidents Cup.

"The camaraderie has been amazing, I really love these type of tournaments," Lee said.

"We're all playing some solid golf … hopefully we can give it a good run.

"I hang out with Jason and Adam a lot and they're the veterans of the group, they keep me level-headed a little bit."

Lee's level-headed mentally doesn't apply to his fresh haircut: he has the letters INT shaved into the right side of his head.

"It was a funny one, I went to one (hairdresser) downtown right near the hotel," he said.

"And just to not sound weird, I was like: 'Hey, do you know there's a golf tournament happening, USA versus Internationals?'

"He's like: 'Yeah, yeah, I think so.

"I was like: 'Well, I'm on that team so could you write I-N-T on the side of my head?

"He was my age and he was very cool about it. He's like: 'I got you.' I just let him do his thing.

"He did a really good job … I haven't done anything extreme like that."

The Americans are 12-1-1 in the all-time series having only lost in 1998 at Royal Melbourne.

The event begins on Thursday (Friday AEST) in Canada.

AAP