Which 1969 Ryder Cup moment at Royal Birkdale became known as 'The Concession'?

The 1969 Ryder Cup moment known as “The Concession” was Jack Nicklaus conceding a putt to Tony Jacklin. At the 18th hole of their final-day singles match at Royal Birkdale, Nicklaus picked up Jacklin's short ball marker, effectively conceding the putt and halving the match.

That decision made the overall Ryder Cup finish level at 16–16. Nicklaus knew Jacklin was highly likely to hole the short putt, and the gesture avoided forcing him to attempt it under pressure. The two players then walked from the green with their arms around each other's shoulders.

The moment became one of golf's best-known examples of sportsmanship. It also had an enduring legacy: Nicklaus and Jacklin later co-designed The Concession Golf Club in Florida, named in memory of the 1969 incident. The result was not a British victory; because the United States entered as defending champions, the Americans retained the Ryder Cup after the tie.