JB Holmes took the United States to brink of Ryder Cup victory with a two and one defeat of Dane Soren Hansen.
After a see-saw encounter it was the big-hitting Holmes who came out on top with a fantastic birdie at the penultimate hole to take his side to 13 and a half points.
Hansen took the early lead but Holmes leveled with a birdie at the third, and another at the fifth gave the American the lead for the first time.
The Danish rookie made the first mistake at the sixth, missing his par putt, but a par at the long seventh was enough after Holmes took six.
The European hung in and was back on level terms courtesy of a birdie at the next, and when Holmes went awry off the tee again the ninth Hansen was able to take advantage and edge ahead.
But the topsy-turvy nature of the match continued as Holmes birdied the next - Hansen missing from five feet for the half - and when the American put his approach to three feet at the 11th he was back in front.
Once more the plucky Dane came back, Holmes missing his putt from close range on 15, but his immense power came to the fore on 16 and 17 - he was able to pitch to within four feet on both holes to set up birdie chances - which he duly converted.
SUNDAY SINGLES DRAW
WESTWOOD BLAST FOR WEEKLEY
Chiefs concern: LJ lashes out at coaches over role
Bloodied QB Palmer leaves Bengals-Saints game
