Sign Up

Register to receive unrivalled access to the world of tennis

Shop My Account

Sign up

Shop My Account

Tournaments
World Tennis Tour Calendars
Other Tour Calendars
World Cup of Tennis Calendars
- Billie Jean King Cup Calendar
- Davis Cup Calendar
ITF Tours
Tours
World Cup of Tennis
- Davis Cup
- Billie Jean King Cup
Competitions
LA 2028
- Olympic Tennis Event
- Paralympic Wheelchair Tennis Event
More
Players
Results
Rankings
World Tennis Tour Rankings
- Women's
- Men's
- Juniors
Rankings
World Cup of Tennis Rankings
- Billie Jean King Cup
- Davis Cup
News
All News
- Latest News
- Latest photos
Tours
Olympics
- Olympics
- Paralympics
World Cup of Tennis
- Billie Jean King Cup
- Davis Cup
About us
Governance
Tennis Tech
Events
Organisation
Growing the Game
Growing the Game

Home
Players
chak sum rex xu Activity

CHAK SUM REX XU

CHAK SUM REX XU

Macau

Head To Head

Age: 15

Plays: Unknown

Overview
Activity
ITF Points Breakdown
Titles
Grand Slams

CHAK SUM REX XU Juniors Doubles Activity

Commercial Partners

Discover More

ITF Tours

Men's World Tennis Tour
Women's World Tennis Tour
World Tennis Tour Juniors
World Tennis Masters Tour
UNIQLO Wheelchair Tennis Tour
Beach Tennis

Olympics, Paralympics

Olympics LA 2028
Paralympics LA 2028

ITF Competitions

Billie Jean King Cup
Davis Cup
Hopman Cup

ITF Sites & Apps

IPIN Player Portal
ITF Academy
World Tennis Number
Live Scores
Rules of Tennis App
Site map

ITF Affiliates

ATP
WTA
Australian Open
Roland Garros
Wimbledon
US Open
International Tennis Integrity Agency
International Tennis Hall of Fame
The Association of Centenary Clubs
The International Club

Terms & Conditions
Data Privacy
Cookies
Whistle-blowing
Modern Slavery
Bribery
Privacy Notices
Accessibility
Compatibility

Copyright © 2026 International Tennis Federation

Follow Us

Copyright © 2026 International Tennis Federation