Henrik Stenson, at the age of 40, is sitting on the first 54-hole lead in a major in his long career. He has an opportunity on Sunday at Royal Troon to win the 2016 British Open Championship and capture his first major title, as well the first by a Swedish man.
However, if Stenson manages to win the Claret Jug, he won't be the oldest first-time major winner. Instead, that honor belongs to another major champion.
Jerry Barber won the 1961 PGA Championship for his only major title, doing so at 45 years, 3 months of age. Barber beat Don January in a playoff at Olympia Fields in Illinois.
Argentinian Robert di Vicenzo won the 1967 Open Championship for his first and only major title, taking the title at the age of 44. He won at Royal Liverpool by two shots over Jack Nicklaus at 10 under par to become the oldest first-time winner of the Open.
Darren Clarke won the 2011 Open Championship at 42 on his 20th try, in what will go down as his only major championship victory at Royal St. George's.
On the women's side of pro golf, Fay Crocker is also the oldest first-time major winner in LPGA history at 40 years, 11 months when she won the 1955 US Women's Open.