He discovers his error at the 2nd tee after his opponent or a fellow-competitor has played but before he has played.

在第2洞发球台，他的对手或同组竞争者打完球后，他发现了自己的错误。

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Since the unauthorized attendance might have influenced the movement of the ball, the opponent or fellow-competitor was in breach of Rule 17-2.

这名球员的对手或同组球员在未经许可的情况下擅自照管旗杆，违反了规则17 - 2。

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The player then announces to his opponent, marker or fellow-competitor that the ball was unfit for play and that he is substituting another ball.

随后，球员向他的对手、记分员或同组球员宣布，他的球不适合使用，他要替换一个球。

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Mr Goss became a global hero when he turned back in a southern ocean hurricane to rescue fellow competitor Raphael Dinelli in the 1996-97 Vende Globe round the world single-handed race.

BBC: Damaged yacht 'can still win'