Thanks Zeio. Most rallies end on the fourth shot or with the fourth shot? Or, the fourth shot was successful in winning the rally or did the fourth shot fail?
The exact passage in the article:
...统计的相关概念界定。 (1) 回合:球处于比赛状态的一段时间。从运动员发球到产生得失分即是一回合; (2) 一回合的板数:一回合内双方运动员击球的总板数; (3) 第N板得分 (失分) :某一运动员在自己第N板时产生得分 (失分) 。其中, 第0板得分为对手发球失误, 无第0板失分。
...Definitions of relevant statistical concepts:
(1) Rally: The period during which the ball is in play. A rally starts from a serve and ends when a point is scored;
(2) Number of strokes per rally: the total number of strokes hit by either player in one rally; (3) Nth scoring/losing stroke: points scored/lost on a player's nth stroke. Among them, the 0th scoring stroke means the opponent's service error, and there is no 0th losing stroke.
Some examples and my interpretation according to how strokes are counted under the expedite rule:
http://www.ittf.com/wp-content/uploads/2016/09/HMO_15th_edition.pdf
15 EXPEDITE SYSTEM
...
15.2.2 Thereafter, in each rally the stroke counter is required to count aloud the return strokes of the receiving player or pair, including the return of service, from “one” to “thirteen”. The call should be made immediately after the receiver has struck the ball and not delayed until the return has been judged good or the ball has gone out of play. If the 13th return is good the umpire should call “stop” and award a point to the receiver.
By "most rallies end on the 4th shot," I meant:
4 strokes, 3rd scoring stroke for Ito(scoring on the 3rd stroke), 4th losing stroke for DN
4 strokes, 3rd scoring stroke for DN, 4th losing stroke for Ito
1 stroke, 0th scoring stroke for Ito, 1st losing stroke for DN
2 strokes, 2nd scoring stroke for Ito
3 strokes, 3rd scoring stroke for Ito
3 strokes, 3rd losing stroke for Ito
3 strokes, 2nd scoring stroke for Ito, 3rd losing stroke for DN
5 strokes, 4th scoring stroke for Ito, 5th losing stroke for DN
6 strokes, 5th scoring stroke for DN, 6th losing stroke for Ito
2 strokes, 1st scoring stroke for ML, 2nd losing stroke for ZJK
2 strokes, 1st scoring stroke for ZJK, 2nd losing stroke for ML
3 strokes, 2nd scoring stroke for ZJK, 3rd losing stroke for ML
2 strokes, 2nd scoring stroke for ZJK
8 strokes, 8th scoring stroke for FZD
3 strokes, 3rd scoring stroke for ML