搶七時,點數加起為六時,換邊發球

查了ITF網球規則後
At the end of each standard game, the receiver shall become the server and the server
shall become the receiver for the next game.

The players shall change ends at the end of the first, third and every subsequent odd
game of each set. The players shall also change ends at the end of each set unless the total number of games in that set is even, in which case the players change ends at the end of the first game of the next set.
During a tie-break game, players shall change ends after every six points.

終於茅塞頓開

大哥！每一局都要換邊發球啦，你說的狀況是交換場地。