At the moment when the tennis ball flies untouched past your opponent, it is the culmination of countless hours practicing
, alone, with a team, and with coaches.
Complete determination is necessary to reach this level of tennis excellence, and for a fleeting moment nothing matters
butexcept this small triumph.
During this moment a player is completely confident in himself. He has toned and shaped himself through his own discipline and the results are shown for all to see. He feels victory, but it is false. Only a point is won, the rest of the match stretches out before him, and he has not yet proven himself. Only when he shakes him opponents hand and the match is over does he truly know himself and how he weighs up to the other. Even then there are more games to play and more opportunities to excel.
I think that in this section you should change it to be "I" so it's more personal and tells more about you. Just an idea.
Overall I really liked this short response. I think it conveys your message well and is well written.
If you could please help me with my Pomona essay I'd really appreciate it! Thanks.