The best amateur golfer in the world took a 3-up lead through three holes on Saturday. Then a 33-year-old from Tullamore with his son waiting behind the 18th green played the next 15 holes in eight under.
Stuart Grehan beat world No. 1 amateur Preston Stout on the 18th hole in Saturday singles at the 2026 Walker Cup at Lahinch, recovering from 3 down after three holes and 2 down with three to play. The singles were split 4-4. Great Britain and Ireland lead the USA 6½-5½ heading into Sunday, having won the morning foursomes 2½-1½.
That's the scoreline. The thing it hides is what happened the last time GB&I led at home after day one, and why a one-point margin at Lahinch should worry the home side more than the visitors. That's in the fourth section.
Reporting note
Built on: Golf Channel's Saturday singles report from Lahinch, Associated Press coverage via Yahoo Sports, AmateurGolf.com's live results hub, The42's report from the course, Irish Golfer Magazine's account of the morning foursomes, and the USGA and R&A Rules of Golf.
What Grehan actually did
Three down after three. Two down with three to play. Won the last three holes.
Golf Channel's report has Grehan playing the final 15 holes at eight under after the poor start, with four putts holed from outside 10 feet during that stretch. The42 puts the winning putt at 14 feet on the 18th, and the AP account via Yahoo confirms the closing birdie.
He'd already denied Stout a full point once that day. AmateurGolf.com's results hub notes Grehan and Eliot Baker held Stout and Ethan Fang to a half in the opening foursomes, when Stout missed a short birdie putt on the 18th that would have won the match, per Irish Golfer Magazine.
Grehan told Golf Channel he'd been surprisingly calm and that both players had produced outrageous golf. He said it clutching his son Kai as Irish fans came onto the green.
Golf Channel's headline calls it improbable. I'd call it the opposite. AmateurGolf.com notes Grehan won the 2015 South of Ireland at Lahinch. He's the reigning Amateur Champion. He was the only home player on the course who'd won on this links before, and he played like it.
How the singles session split
Four each, and the order they finished in tells you more than the total.
AmateurGolf.com's hub records the USA winning four of the first five matches on the course and GB&I winning the last three. Golf Channel lists the American winners: Ethan Fang over Jack Whaley by a hole, William Jennings over Connor Graham by a hole, Jay Leng Jr. over Tyler Weaver 2 and 1, and Stewart Hagestad over Ben Bolton 2 and 1.
Weaver, the world No. 3 amateur and GB&I's top-ranked player, lost to a late bogey at the 17th. Whaley, who beat Leng in the U.S. Amateur final at Merion last month, fell behind Fang early and never caught up.
GB&I's other winners came late: Luke Poulter 2 and 1 over 17-year-old Miles Russell in the last match out, Niall Sheils Donegan 3 and 2 over Tyler Watts, and Eliot Baker 3 and 2 over Josiah Gilbert.
Hagestad's record is the number worth keeping. Golf Channel puts him at 8-1 in career Walker Cup singles after trailing through seven holes and making three birdies in the next six.
The scoop that cost a hole
Four up through eight, then a missed birdie putt at the 9th, then a lifted ball.
Irish Golfer Magazine's account has Sheils Donegan missing a birdie putt on the high side in the morning foursomes, assuming it would be conceded, scooping the ball up and moving to replay it. Ryder Cowan said immediately that no concession had been given. A rules official awarded the hole to the Americans.
Rules of Golf Breakdown: Rule 3.2b Concessions
The rule is Rule 3.2b of the current Rules of Golf, which the R&A's text states plainly: a concession is made only when clearly communicated, verbally or by an action that clearly shows intent, and it's final once given. The rule provides an exception where an opponent lifts the ball through a reasonable misunderstanding of the player's words or actions. No such words or actions existed here.
Sheils Donegan called it brainless, per the Irish Golfer headline. He and Josh Hill won 4 and 3 regardless.
You'll see this at your club on Saturday. Somebody misses a short one, rakes it back and re-putts before anyone says a word. In a friendly it's nothing. In a match it's the hole, and the Rules make no allowance for the putt being obviously good.
Why a one-point lead should worry GB&I more than the USA
Here's the loop from the top. The AP, via Yahoo Sports, points to 2023 at St Andrews, the last time GB&I played at home. They led by three points after day one. The Americans won 10 of the 14 matches on Sunday.
Three up became a loss. This time it's one.
AmateurGolf.com notes 14 points are available on the final day, and the U.S. leads the all-time series 40-9-1 with five straight wins. GB&I's last victory came at Royal Lytham & St Annes in 2015, 16½-9½.
The American side arrived with seven of the world's top 10 amateurs, per Golf Monthly's preview, led by Stout. The home side has one of them in Weaver, and he lost on Saturday.
My read after watching a lot of these on both sides of the Atlantic: the Saturday lead matters far less than the Sunday foursomes. GB&I won that session 2½-1½ on day one, and the morning matches tomorrow will decide whether the singles start with a cushion or a deficit.
What Sunday looks like
Four foursomes in the morning. Ten singles in the afternoon. Every player on the course.
The format has been fixed for years: Wikipedia's records for recent contests describe 26 matches in total, with four foursomes and eight singles on Saturday, then four foursomes and ten singles on Sunday. Each match is worth one point, halved matches split the point, and 13½ wins the Cup. A tie means the holder retains it, and the holder is the USA.
So GB&I need seven of the 14 points on Sunday. The USA need eight.
The Lahinch crowd will be a factor, and it already was. The42 describes chants of "Ole Ole Ole" after Grehan's winning putt, and Golf Channel's footage shows fans reaching the green before the handshake was done.
Four things being said about Saturday that don't hold up
- "GB&I are in control." They lead by one point with 14 available, against a team that turned a three-point deficit into a rout at St Andrews in 2023.
- "The singles went GB&I's way." They finished 4-4. What went GB&I's way was the order, with the home side winning the last three matches out.
- "Grehan's win was a fluke." He's the reigning Amateur Champion, has won at Lahinch before, held four putts from outside 10 feet down the stretch and had already halved with Stout that morning. That's a player, not a lucky day.
- "Stout had a bad day." He was 3 up after three, 2 up with three to play, and missed one short putt in the morning. He lost by the width of two Grehan putts.
Frequently Asked Questions
How did Stuart Grehan beat Preston Stout?
By recovering from 3 down after three holes to win on the 18th. Golf Channel reports Grehan played the final 15 holes at eight under, holing four putts from outside 10 feet, and won the last three holes after standing 2 down with three to play. The42 puts the winning putt at 14 feet.
What is the Walker Cup score after day one?
Great Britain and Ireland lead the USA 6½-5½. GB&I won the morning foursomes 2½-1½ and the afternoon singles were split 4-4, with the Americans winning four of the first five matches and GB&I taking the last three on the course.
What happened with the conceded putt in the foursomes?
Niall Sheils Donegan missed a birdie putt at the 9th, picked his ball up assuming it would be conceded and moved to replay it. Ryder Cowan pointed out no concession had been given. Under Rule 3.2b a concession must be clearly communicated, and a rules official awarded the hole to the USA.
When did GB&I last win the Walker Cup?
In 2015 at Royal Lytham & St Annes, 16½-9½. The USA has won the five contests since, including a Sunday comeback at St Andrews in 2023 after trailing by three points. The Americans lead the all-time series 40-9-1.
How many points does GB&I need on Sunday?
Seven of the 14 available, to reach 13½. The USA needs eight. A 13-13 tie would see the Americans retain the Cup as holders. Sunday features four foursomes in the morning and ten singles in the afternoon, with every player on both teams in action.
The Raw Verdict
A 33-year-old who's spent his amateur career being overlooked beat the best amateur in the world on the course where he won eleven years ago, in front of a crowd that walked onto the green before he'd finished. If GB&I lose tomorrow, that's still the golf moment of the week.
They may well lose tomorrow. One point is nothing against a team that made up three at St Andrews, and Sunday's foursomes decide this before the singles begin. If you're watching, don't look at the scoreboard at lunch. Look at whether the home side won the session. That's the whole match.
Sources
- Golf Channel, Saturday singles coverage and post-match quotes from Lahinch.
- Associated Press via Yahoo Sports, Walker Cup day one report and 2023 St Andrews context.
- AmateurGolf.com, live tournament hub, match results and historical series records.
- The42, on-course reporting and gallery accounts from Lahinch.
- Irish Golfer Magazine, morning foursomes account and Niall Sheils Donegan Rule 3.2b concession review.
- The R&A and USGA, Rules of Golf (Rule 3.2b Concessions).
How we reported this. We cross-checked match scoring from AmateurGolf.com and the official Walker Cup scoring hub against on-course reporting from Golf Channel, The42, Irish Golfer Magazine and the AP. Official rules citations reference the R&A and USGA Rules of Golf.
Author. GOLFRAW Editorial is GolfRaw's tournament desk.
Corrections. None at publication. Corrections policy.
Last updated. .