K****D 发帖数: 30533 | 1 ☆─────────────────────────────────────☆
KennyD (|-==-|) 于 (Wed Aug 12 13:00:58 2009, 美东) 提到:
Is it allowed to use underhand 2nd serves frequently in low
level USTA league matches to avoid double faults?
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Yoss (...but we still have the radio) 于 (Wed Aug 12 13:07:57 2009, 美东) 提到:
don't see why not since it has been done at the GS level...
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wwwlz (wwwlz) 于 (Wed Aug 12 13:08:43 2009, 美东) 提到:
2个月前我们这的一场40s组的决 |
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