Antonio DJAKOVIC of Switzerland prepares himself before competing in the Men's 4x100m Medley Relay Final during the Swiss Swimming Championships (50m) in Uster, Switzerland, Thursday, April 9, 2026. (Photo by Patrick B. Kraemer / MAGICPBK)

Antonio DJAKOVIC of Switzerland poses with his Gold medal after winning in the Men's 400m Freestyle Final during the Swiss Swimming Championships (50m) in Uster, Switzerland, Sunday, April 12, 2026. (Photo by Patrick B. Kraemer / MAGICPBK)

SC Uster’s Antonio DJAKOVIC, Noe PONTI, Daniil SOKOLOVSKIY and Timo SORGIUS pose with their Gold medals after winning in a new Swiss Record in the Men's 4x200m Freestyle Relay Final during the Swiss Swimming Championships (50m) in Uster, Switzerland, Saturday, April 11, 2026. (Photo by Patrick B. Kraemer / MAGICPBK)

Antonio DJAKOVIC of Switzerland prepares himself before competing in the Men's 400m Freestyle Heats during the Swiss Swimming Championships (50m) in Uster, Switzerland, Sunday, April 12, 2026. (Photo by Patrick B. Kraemer / MAGICPBK)

Antonio DJAKOVIC of Switzerland on his way winning in the Men's 400m Freestyle Final during the Swiss Swimming Championships (50m) in Uster, Switzerland, Sunday, April 12, 2026. (Photo by Patrick B. Kraemer / MAGICPBK)

Antonio DJAKOVIC of Switzerland competes in the Men's 400m Freestyle Heats during the Swiss Swimming Championships (50m) in Uster, Switzerland, Sunday, April 12, 2026. (Photo by Patrick B. Kraemer / MAGICPBK)

Antonio DJAKOVIC of Switzerland poses with his two Silver medals after finishing second in the Men's 200m Freestyle Final and Men's 400m Freestyle Final during the swimming events of the LEN European Aquatics Championships in Rome, Italy, Wednesday, Aug. 17, 2022. (Photo by Patrick B. Kraemer / MAGICPBK)

Antonio DJAKOVIC and his sister Vanna DJAKOVIC of Switzerland pose for a photo during the 2025 European Aquatics U23 Swimming Championships in Samorin, Slovakia, Saturday, June 28, 2025. (Photo by Patrick B. Kraemer / MAGICPBK)

Julia ULLMANN (bottom), Tiago BEHAR, Gaia RASMUSSEN and Antonio DJAKOVIC of Switzerland react after competing in the Mixed 4x100m Freestyle Relay Final during the 2025 European Aquatics U23 Swimming Championships in Samorin, Slovakia, Saturday, June 28, 2025. (Photo by Patrick B. Kraemer / MAGICPBK)

Antonio DJAKOVIC, Julia ULLMANN, Gaia RASMUSSEN and Tiago BEHAR of Switzerland pose for a photo after competing in the Mixed 4x100m Freestyle Relay Final during the 2025 European Aquatics U23 Swimming Championships in Samorin, Slovakia, Saturday, June 28, 2025. (Photo by Patrick B. Kraemer / MAGICPBK)

Antonio DJAKOVIC of Switzerland prepares himself before competing in the Men's 400m Freestyle Final during the Swiss Swimming Championships (50m) in Uster, Switzerland, Sunday, April 7, 2024. (Photo by Patrick B. Kraemer / MAGICPBK)

Antonio DJAKOVIC of Switzerland on his way winning in the Men's 800m Freestyle during the Swiss Swimming Championships (50m) in Uster, Switzerland, Saturday, April 6, 2024. (Photo by Patrick B. Kraemer / MAGICPBK)

Antonio DJAKOVIC of Switzerland on his way winning in the Men's 800m Freestyle during the Swiss Swimming Championships (50m) in Uster, Switzerland, Saturday, April 6, 2024. (Photo by Patrick B. Kraemer / MAGICPBK)

Antonio DJAKOVIC of Switzerland on his way winning in the Men's 800m Freestyle during the Swiss Swimming Championships (50m) in Uster, Switzerland, Saturday, April 6, 2024. (Photo by Patrick B. Kraemer / MAGICPBK)

Antonio DJAKOVIC of Switzerland on his way winning in the Men's 200m Freestyle Final during the Swiss Swimming Championships (50m) in Uster, Switzerland, Thursday, April 4, 2024. (Photo by Patrick B. Kraemer / MAGICPBK)

Antonio DJAKOVIC of Switzerland prepares himself before competing in the Men's 200m Freestyle Heats during the swimming events of the 22nd World Aquatics Championships - Singapore 2025 in Singapore, Singapore, Monday, July 28, 2025. (Photo by Patrick B. Kraemer / MAGICPBK)

Antonio DJAKOVIC of Switzerland walks out after competing in the Men's 400m Freestyle Heats during the swimming events of the 22nd World Aquatics Championships - Singapore 2025 in Singapore, Singapore, Sunday, July 27, 2025. (Photo by Patrick B. Kraemer / MAGICPBK)

Antonio DJAKOVIC of Switzerland competes in the Men's 400m Freestyle Heats during the swimming events of the 22nd World Aquatics Championships - Singapore 2025 in Singapore, Singapore, Sunday, July 27, 2025. (Photo by Patrick B. Kraemer / MAGICPBK)

Antonio DJAKOVIC of Switzerland is pictured during a physio treatment during a training session during the swimming events of the 22nd World Aquatics Championships - Singapore 2025 in Singapore, Singapore, Saturday, July 26, 2025. (Photo by Patrick B. Kraemer / MAGICPBK)