Nickname is Szumi Father, Piotr; mother, Karolina; brother, Adam, also plays tennis. Says that his dad is his hero Started playing tennis at academy of a family friend "Both of my parents were teachers so I never expected to be a professional," he said."It seemed like we didn't have enough money for me to play tennis, but somehow I made it." Studied at University of Lodz in Poland Favourite shot is dropshot, surface is hard and tournament is Wimbledon Lists Melbourne as his favourite city on tour Tennis idol is Novak Djokovic Also enjoys football. Fan of Manchester United and Ronaldinho Favourite superhero is Batman and actress is Mila Kunis Enjoys watching TV shows. Favourite show and book is Game of Thrones Favourite food is pizza

Former World No. 7 junior broke into Top 100 in July 2019 and achieved career-high No. 75 in February 2022

Advanced to ATP Tour SFs at 2022 Pune and 2025 Marrakech as Q, before defeating former finalist Berrettini en route to 2025 Wimbledon 4R

In 2019, qualified at Australian Open and Wimbledon before advancing to US Open 3R as LL with 5-set wins over Jarry and Cuevas

Owns 180-106 Challenger record (9-6 in finals), defeating future Top-20 players Carreno Busta and Cecchinato to reach 1st final at 2015 Mohammedia as Q

Ended junior career as 2014 Youth Olympics gold medallist, also capturing 2013 US Open boys’ doubles title w/Ma. Redlicki and earning wins over future Top-10 ATP players Berrettini, Fritz, Hurkacz, Medvedev and Rublev