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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The marker, who was a fellow-competitor, recorded a gross score of 4 for a, who did not receive a stroke, and no gross score for B.

记分员也是同组的竞争者，他把没有收到差杆的A的总杆数记为4杆，没有记b的总杆数。

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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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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'