The name 'Zizou' comes from the nickname of French football legend Zinedine Zidane.
Speaks Dutch, French and English.
Father, Koen, is the CPO for the train company in Belgium; mother, Anne-Mie, is an indepedent photographer; brother, Maxim, is a ski instructor.
Began playing tennis at age 3 with his father before progressing at age 8 to LTA Academy (Belgium) and age 15 to Flemish Federation's training centre.
Credits influence of current coach Bertrand Tinck and former coaches Tom Devries and Johan Van Herck.
Idols growing up were Andy Roddick and Jo-Wilfried Tsonga.
Favourite surface is indoor hard, shot is serve and tournament is Antwerp.
Lists being a sports event manager as his dream job.
Favourite sports outside tennis are handball and basketball.
Supports Belgian football club K.V. Mechelen.
Says his secret talent is that he's a musician. Plays both piano and guitar.
Favourite food is Belgian fries (frituur), but guilty pleasure is chocolate.
Taking online economics classes for a degree in business management and management science.
Does charity work, sending tennis clothes and equipment and racquets to Burundi.
Works with a sports psychologist and believes that doing visualization, mindfulness and breathing techniques are critical to becoming a better and stronger player.
Says that his best quality is being good-hearted and eager to learn.
(UPDATED 14 DECEMBER 2022)
Former World No. 12 junior broke into Top 200 in July 2021 and achieved career-high No. 128 in September 2022.
Defeated Ramos-Vinolas for 1st ATP Tour win at 2020 Antwerp as 528th-ranked WC.
Earned 2022 Wimbledon WC after defeating former World No. 8 Sock for 2022 Ilkley Challenger title as Q.
Also won Challenger titles at 2021 St. Petersburg-1 as Q, 2021 Lille as Q and 2021 Almaty.
Went 90-45 on ITF Junior Circuit, but lost in 1R of all 4 Grand Slam boys’ singles events in 2017.
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