South African golfer Louis Oosthuizen won the British Open 2010.
No golfer has ever won 6 US Opens.
Matteo Manassero, he won the 2009 British Amateur. He played with Tom Watson in the first two rounds and he finished as low amateur and therefore won the silver medal.
The R&A states, entry is open to any golfer with a handicap of 0 or better.
Young Tom Morris, he was 17 years and 181 days when he won it in 1868.
Tiger Woods was approximately 25 years old when he won the British Open. Tiger is a well known professional golfer.