PRINCE WILLIAM COUNTY, Va. -- Mike Weir and Trevor Immelman weren't out to prove a point in Thursday’s opening round of The Presidents Cup. They just wanted to score one.

They ended up doing both.

Viewed as suspect in some circles -- Weir for his struggles much of the year, Immelman for a record that wasn't as stout as other wild card candidates -- the International Team duo couldn't have been more solid in their Foursomes match against American veterans David Toms and Stewart Cink.

Weir, 35, and Immelman, 25, put up birdies on four of the first five holes at Robert Trent Jones Golf Club and rolled to a convincing 6-and-5 triumph, the largest margin of victory in the first day of sixth Presidents Cup.

This wasn't supposed to be the script, if you go by what some observers were espousing. International captain Gary Player ’s selection of Immelman, a compatriot from South Africa, raised eyebrows when more experienced players like Steve Elkington, K.J. Choi and Shigeki Maruyama were in the mix.

"That's the only unpleasant thing about being the captain ... because no matter who you pick there are always certain people who are going to be unhappy," Player said. "But you just watch Trevor Immelman in the next five years -- unless I don't know how to pick a good player."

Critics who watched Immelman on Thursday should have found their doubting contentions duly refuted.

"He played great today. He was like a veteran out there," Weir said. "Trevor, everyone on our team in our minds (thought) Trevor was a good pick. We know what he's capable of. We all know he's a good player and he has a lot of enthusiasm."

Mike Weir and Trevor Immelman posted Thursday's most decisive victory. (WireImage)

Weir, the 2003 Masters champion who is winless since the 2004 Nissan Open, has found his enthusiasm returning with a stretch of good health. An achy back caused pain to his psyche and fundamentals, but he's been feeling better in the last month and able to practice for longer stretches -- a must, the Canadian says.

"I'm the type of player who has to practice a lot to get into a rhythm and play well. I can't do it on natural talent," the left-hander said. "I've worked really hard on my game of late and I could see my game coming around. My swing is really good."

On Thursday there was plenty for Weir and Immelman to get enthusiastic about starting from the first hole.

Weir opened with a perfect drive and drained a 9-foot birdie putt after Immelman's nervy but nifty 9-iron approach. The pair went two up when Immelman drained an 82-foot putt from just off the front of the fourth green. Then Immelman stuffed his approach at the following hole to within a foot for a kick-in birdie and 3-up lead.

Toms and Cink, who conceded one hole but otherwise had a bogey-free scorecard, never responded to get a foothold in the match.

"To lose 6 and 5, it takes a little bit of both -- we didn't play as good as we could and they played exceptionally well," Cink said.

Indeed, and they did not let up. The duo all but closed out the match when Immelman made a 17-foot birdie putt at the 12th to go dormie -- six up with six holes remaining. His 2-footer for par at the 13th clinched it.

Player declined to admit whether he did or did not take extra satisfaction from Immelman's performance. Likewise, Weir wasn't up for told-you-so revelations.

"I know what's been said, but the only opinion that matters to me is my own," Weir said. "I don't care who has confidence in me, as long as I have confidence in myself. Right now, as poorly as I've played for much of the year, I have a lot of confidence in the things I'm doing."

And he made his point with a point.