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Oakland City Wire

Sunday, October 26, 2025

Ethan Koesuma junior tennis player earns 278 playing Boys 12 singles by week ending March 5

Diamond Bar tennis player Ethan Koesuma won 278 points playing singles tournaments in the junior Boys’ 12 category of the United States Tennis Association by the week ending March 5.

Their 278 points playing singles are combined with 15 percent of their doubles points and any bonus points for a 7,450th ranking.

They were ranked 7,450th the week before.

Players earn points per round in tournaments, winning higher points the further into a tournament they advance.

Jarett Cascino of New York Tennis Magazine says tennis is one of the most competitive youth sports.

“There is always someone better than you on any given day, even if you are the number one player in the world!” he said.

Standings are released weekly.

Junior Boys’ 12 singles from Diamond Bar rankings in week ending March 5
NameSingles PointsTotal Points
William Chan442442
Andy Wu410410
Ethan Koesuma278292
Yash Sundaresan5656
Matthew Chang88

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