Who is Jakub Mensik, a 20-year-old Czech star who got special tips from rival Novak Djokovic? Meet his girlfriend and coach ahead of French Open 2026 QF

Jakub Mensik continues his impressive run at the French Open 2026. The young Czech star is moving closer to one of the biggest milestones of his career. The 20-year-old has reached the quarterfinals at Roland Garros for the first time and now faces Brazilian sensation Joao Fonseca for a place in the last four.

Ranked World No. 27 and seeded 26th in Paris, Mensik has emerged as one of the brightest young talents on the ATP Tour. Several important people behind the scenes have played a major role in helping him reach this stage. From his supportive girlfriend Josefina Catino to long-time coach Tomas Josefus and childhood idol Novak Djokovic, each has helped shape Mensik’s journey.

The people behind Jakub Mensik’s rise to French Open stardom

Josefina Catino has been one of Jakub Mensik’s biggest supporters during his rise in professional tennis. The Argentine has largely stayed away from the spotlight, but the couple made their relationship public in early 2025. Since then, they have occasionally shared moments together on social media.


Catino’s importance in Mensik’s life became evident after his triumph at the ASB Classic in Auckland 2026. During his victory speech, the Czech star thanked his family and girlfriend. He thanked them for their constant support and encouragement throughout his journey. Catino was also present in Paris and watched from his player box as Mensik battled through a thrilling five-set victory against Andrey Rublev in the fourth round.

Another influential figure in Mensik’s career is coach Tomas Josefus. The former Czech tennis player first met Mensik when he was only eight years old. Their partnership has lasted for more than a decade and has been central to the youngster’s development.

Josefus has often described Mensik as a naturally aggressive baseliner who likes to dictate rallies by taking time away from opponents. According to the coach, the Czech’s powerful serve and attacking return game have become defining features of his playing style.

Josefus also revealed a memorable moment from early 2022. When Mensik unexpectedly received a video message from Novak Djokovic. The young Czech initially struggled to believe it was genuine. Mensik later admitted that he thought someone was joking with him before realizing the message had indeed come from his tennis idol.

That admiration came full circle at the Miami Open 2025. Mensik defeated Djokovic in the final to win his first ATP Tour title. Reflecting on the victory, he said beating the player who inspired him to take up tennis was a dream come true. He added that winning a Masters 1000 event against Djokovic in a championship match made the achievement even more special.

Now, with a French Open semifinal spot on the line, Mensik is carrying the support of his closest circle as he looks to continue his remarkable breakthrough season.