Sam Whitcomb is twelve years old the September morning he picks up the bag of a twenty-year-old amateur named Francis Ouimet at The Country Club. Three days later, he is standing on a wet eighteenth green watching Francis beat Harry Vardon and Ted Ray in a playoff that nobody in America thought possible. He writes it all down in a penciled letter to his older brother in the merchant marines and mails it the next morning.
The letters keep coming, year after year, course after course. Sam follows the game and the game follows him — to Inverness in 1920, to Inwood in 1923, to Oakmont, to Merion in 1930. He loops for Bobby Jones during the Grand Slam summer. He sits at the elbow of Walter Hagen at a Westchester bar. He carries Gene Sarazen's bag the day the sand wedge is born in a workshop nobody believes will matter.
As Sam moves through the seventeen years that built the modern game, neither he nor the men reading his letters back home know which round, which shot, which quiet conversation in a clubhouse bar will turn out to be the moment golf changed forever — only that they were there to see it.