Russell Henley hit a stunner into the first - that's why you have Scottie Scheffler teeing off!

Robert MacIntyre also hit a nice approach that Viktor Hovland tidied up and they make Scheffler knock in a tiddler for a half.

Matchplay tactics often say you'd give him that so he doesn't get a feel for the greens, but the way Scheffler played yesterday...

Super shot from the rough by Jon Rahm there. Birdie look for Tyrrell Hatton on the second coming up.

Peter Scrivener
BBC Sport senior journalist at Bethpage

And with that the mass exodus begins - with only four matches to watch all holes get congested pretty quickly.

What’s your strategy? Pick a match and follow, or pick a spot and wait?

How quickly things can turn...

Both pairs on the green on the par three third but it is advantage Europe with Rory McIlroy leaving Tommy Fleetwood around seven feet from the hole.

A much longer putt for Collin Morikawa and he can't put the pressure on as it comes up short.

No mistake from Fleetwood as he sinks it and turns the match around.

Nice drive from Viktor Hovland despite the noise - although it doesn't sound as bad as previous groups, I mean how can you boo Viktor Hovland?

Scottie Scheffler loads up and hits a nice drive - they've changed the order for this team as Russell Henley teed off first yesterday.

A reminder they take it in turns so one player hits first off the even numbers and one off the odds - there's loads of stats that go into deciding not only the pairing but who should tee off which holes.

Europe go into huge depth on these, you wonder if Keegan Bradley did so much research since he's had to change tactic here.

Peter Scrivener
BBC Sport senior journalist at Bethpage

Double boos up on the first tee as Vik and Bob appear at exactly the same time as public enemy number one Rory appears on the big screen. The fans don’t know who to direct their ire at.

Scottie was not too hottie yesterday, as Keegan Bradley admitted. What game will the world number one bring today?

No good for the US with their putt and Europe go one up in this enticing match.

Image source, Getty Images

Big day for these two. The only European foursome to not win in Friday's matches, they were a bit scrappy in their defeat and if they don't perform this morning they are unlikely to play this afternoon.

Featuring in three matches is unlikely to be the Ryder Cup they had in mind as they prepared for this week.

And they are up against the world number one, who you feel is going to be uber fired-up by all the chat about his day one effort.

Including our take: Scheffler faces unwanted Woods comparison

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Matt Fitzpatrick with a wonderful chip again right across the fourth green to no more than a foot from the flag for a gimme four.

I might try that left hand below right as Fitzy is just magic with a wedge in hand - a big one's going to drop sooner or later, but that one's enough to win the hole as Bryson DeChambeau misses his birdie putt.

From all the bouncing around and fist pumping at the start of this match it's all a bit quiet now as Europe square it up.

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It is Collin Morikawa to go first with his attempt from the back of the collar of the fringe the front of the green - and it is a nice attempt to finish up just inches from the hole.

An outside chance to win the hole for Tommy Fleetwood...

And he does! A lovely paced putt and we are back to all-square in match two!

Ask Me Anything

Golf spectators have been known to shout a number of phrases once a player has hit his shot, including "mashed potatoes."

Other shouts, including "get in the hole", make much more sense in golf terms. But other calls, such as "mashed potatoes", have less obvious sporting meanings.

It was first heard at the 2010 PGA Championship following a Tiger Woods tee shot and was shared online shortly after.

A year later, American spectator Andrew Widmar shouted it after another Woods tee shot at the Chevron World Challenge.

The fan said he shouted it so his mother could spot him in the crowd on television. Since then, its popularity and use has significantly increased.

It is widely understood to just be a completely random shout with no real meaning behind it.

Patrick Cantlay to play first. He has to finesse this between two trees and the branches are threateningly in his way.

But he does that very well. Long-ish birdie putt but half a chance of a three.

Tyrrell Hatton is in juicy rough but with a perfect angle of attack. And he plays that to perfection!

That's a gimme. Three for Europe and US must hole theirs to stay A/S.

Another slightly wayward shot off the tee for Europe, but Tommy Fleetwood is the one to land it off the fairway this time.

Riding the confidence of the early lead, Collin Morikawa lands it in a better position for his partner.

Who can take advantage on the approach?

Neither.

Both Rory McIlroy and Harris English hit almost identical shots to land in the fringe of the second green.

Down the right and into the rough for Jon Rahm.

Xander Schauffele pushes his drive even further right and that will be an awkward approach for his partner.

Another match turns red as Cameron Young chips in from just off the third green, after Matt Fitzpatrick was inches away from holing his birdie putt.

It's been a decent start from both teams here but that one piece of extra quality from Young is the difference.

Jon Rahm and Tyrrell Hatton are on the first tee and guess what, they look all business.

Patrick Cantlay isn't larking about either to be fair and this match already feels like it is fizzing... and a ball hasn't been struck yet.

Xander Schauffele's Cali vibes are the only soothing aspect to this foursome.

Turns out to be very crucial.

From 14ft away, Harris English does what he needs to do and takes advantage on the first hole to get the American pair and early birdie and go one-up in the game.

First bit of red on the board.

Oof, so close for an opening birdie from Rory McIlroy!

His chip shot from the rough next to the green looks to be on a great line and somehow works its way around the end of the hole - dipping in slightly - only to pop back out.

How crucial could that be on the first?

Image source, Getty Images

This might well be the match of the morning. Tyrrell Hatton and Jon Rahm are a mighty pair for Europe and, naturally, won their foursome yesterday.

But they're up against a stuffy US duo, with Patrick Cantlay an absolute stud - minus that missed tiddler - against Rory McIlroy and Shane Lowry in the fourballs.

Xander Schauffele was solid if not at his best yesterday morning and might be better for that run-out against Robert MacIntyre and Viktor Hovland.

Fiery Rahm and Hatton up against the menace of Cantlay? Bring it on!