Kia (opens in a new tab) Žiga ŠEŠKO
Žiga Šeško kissing the Australian Open boys' trophy

Slovenian tennis player · Hrastnik, 2008

Žiga ŠEŠKO

ITF # 3 Junior
ranking
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From Zasavje to Centre Court

From Hrastnik to the biggest courts in the world.

His father Dejan, a former table tennis player, put the first racket in his hand. The road led to Italy, to Riccardo Piatti's centre in Bordighera, and today he trains at the Rafa Nadal Academy in Mallorca.

In January 2026, seeded seventh, he won the Australian Open boys' title and became the first Slovenian to win a boys' Grand Slam final.

The journey
Young Žiga Šeško with a first-place trophy and racket on a clay court in Koper
Žiga Šeško in the kit of the Slovenian Olympic team

Early years

First swings in Zasavje.

Tennis came from his father Dejan, a former table tennis player. He grew up in Hrastnik, where in 2024 he won his first ITF title at the home M15 event. From there he moved to Riccardo Piatti's centre in Bordighera, finishing secondary school in Litija remotely between tournaments.

Full journey

Timeline

  1. 2008

    Born on 27 July in Hrastnik. His father Dejan, a former table tennis player, teaches him his first strokes.

  2. 2024

    First ITF title: doubles at the M15 in his hometown Hrastnik, with Nik Razboršek.

  3. 2025

    Wimbledon boys' quarter-final. Davis Cup debut at 17 with a win over Francisco Llanes. Doubles title at the Orange Bowl.

  4. 2026I

    Australian Open boys' champion: 4–6, 6–3, 6–4 over Keaton Hance. Roland Garros quarter-finals in singles and doubles. Moves to the Rafa Nadal Academy.

  5. 2026II

    Wimbledon boys' doubles champion with Luís Guto Miguel. First ATP main draw in Umag, first professional title in Wels, ATP No. 688 and No. 3 in the ITF junior rankings.

Žiga Šeško with the Australian Open boys' trophy in Melbourne

Melbourne · January 2026

Australian Open. Champion.

Ž. Šeško466
K. Hance634
No. 1 Court at Wimbledon

London · July 2026

Wimbledon. Doubles.

Title with Brazil's Luís Guto Miguel, without dropping a set in the final: 6–1, 6–4.

The first Slovenian to win a boys' final at a Grand Slam.

Australian Open · 2026

Results

Four tournaments, four stories.

Best junior Grand Slam results
TournamentSinglesDoubles
Australian OpenChampion 2026Quarter-final 2026
Roland GarrosQuarter-final 2026Quarter-final 2026
WimbledonQuarter-final 2025Champion 2026
US Open1st round 2025, 2026Quarter-final 2026
  • 2Junior Grand Slam
    titles
  • #3ITF junior
    ranking
  • 110Junior singles
    wins
  • #688Career-high
    ATP ranking

Moments & photos

On COURT

Žiga Šeško serving on grass at Wimbledon
Žiga Šeško with the trophy on Rod Laver Arena
Melbourne · January 2026

Melbourne, Paris, London, New York. All four Grand Slams in one season.

2026 season

Portrait of Žiga Šeško in the Slovenian Davis Cup team shirt

Profile

Big serve. Calm mind.

At 1.92 metres he starts the point from above. The serve is the shot his game is built on, while the two-handed backhand keeps rallies under control.

Born
27 July 2008, Hrastnik
Height
1.92 m
Plays
Right-handed, two-handed backhand
Coaches
Riccardo Piatti, Dejan Šeško
Base
Rafa Nadal Academy, Mallorca
National team
Davis Cup since 2025
Partners