Given the task definition and input, reply with output. In this task, you're given the title of a five-sentence story and the first four sentences. Your job is to write the last sentence of the story such that it seamlessly connects with the rest of the story.

Title: The Best. Sentence 1: John thought he was the best checkers player in the world. Sentence 2: At a tournament a young child challenged him. Sentence 3: John accepted the challenge and played the young child. Sentence 4: After a nail biting game, the young child was one move from winning.
In frustration John flipped the board and quit the tournament.