Father,Petr, is his coach and a former World No. 2. Mother, Regina (Rajchrtova), peaked at No. 26 in WTA and coached him as a child. Sisters, Jessica and Nelly, are pro golfers on LPGA Tour.
Four Kordas have won Australian Open championships: Sebastian (2018 boys' singles), Petr (1998 men's singles), Jessica (2012 LPGA) and Nelly (2019 LPGA).
Began playing hockey at age 3 and dreamed of making it to NHL.
Started pursuing tennis at age 9 after attending US Open.
Idols growing up were Radek Stepanek,Rafael Nadal and his father.
Cat, Rafa, is named after Nadal.
Asked Nadal to sign a shirt after losing to him in 2020 Roland Garros 4R.
Mentored by former World No. 1s Andre Agassi and Steffi Graf, whom he trained with prior to 2021 season.
Favourite surface is hard, shot is backhand and tournamentis US Open.
If he wasn't a tennis player, he would have liked to have been a hockey player or golfer.
Favourite sports team isBoston Bruins (NHL).
(UPDATED 23 AUGUST 2024)
Achieved career-high No. 15 in August 2024, joining Petr Korda (career-high No. 2 in 1998) to become the only father-son duo to rank inside Top 20 in PIF ATP Rankings history (since 1973).
Earned biggest wins of career en route to ATP Masters 1000 SFs over No. 3 Medvedev at 2023 Shanghai and No. 4 Zverev at 2024 Montreal.
Did not drop a set en route to 2021 Parma title, then captured 2024 Washington title, 32 years after his father, Petr, won in 1992, becoming the first father-son duo to win the same ATP Tour event.
Advanced to 2020 Roland Garros 4R as Q and 2021 Wimbledon 4R, becoming 3rd men’s player in Open Era to reach 4R in debut at both events (Borg in 1973, Pernfors in 1986).
Became World No. 1 junior by winning 2018 Australian Open boys’ singles title 20 years after his father won Australian Open men's singles title.
Father, Petr, peaked at No. 2 on ATP Tour; mother, Regina, peaked at No. 26 in WTA; sister, Nelly, became World No. 1 women’s golfer in 2021; sister, Jessica, peaked at No. 8 in women’s golf.