i think it is very normal for tennis players to"相互争风吃醋，火药上阵"
1. there is a NTRP system. everyone ranks himself with the best knowledge he
can. and no matter who rates it for you it is always subjective. and different
regional usta league has different average level.
2. compared to badminton, tennis game and skill have much more variety. so
there are more agree and disagree.
3. most tennis fans who pass the very boring beginner's phase (boring for
those who failed) must be very serious with tenni
