An international field of players will begin arriving at The Country Club on Friday for the 2013 US Amateur Championship, even as the venerable private club is celebrating the 100th anniversary of local amateur golfer Francis Ouimet’s historic US Open victory. The participants will be playing practice rounds over the weekend, and tournament play will begin on Aug. 12. As the oldest country club in the United States, the course has hosted many big-name golf tournaments, including the 1999 Ryder Cup. Ouimet’s triumph in the 1913 US Open inspired a book by Mark Frost, “The Greatest Game Ever Played,” that was turned into a movie in 2005. The Golf Channel will air early rounds of match play at the amateur tournament, and NBC will air the semifinals and championship matches on Aug. 17 and 18, according to the US Golf Association.