Web Reference: Although not related by blood, their relationship showcases how some relationships are built on love and affection. Sinner’s parents adopted his older brother, Marc Sinner, when he was nine months old. He originally hailed from Russia before coming to Italy 26 years ago. Marc Sinner is the brother of Jannik Sinner and he is elder than the Australian Open 2024 champion. He was born in 1998 in Russia in Rostov on Don. The 25-year-old now works as a fire brigade teacher in Vilpiano, South Tyrol, which is close to Bolzano. Jannik Sinner's brother Marc is a huge F1 fan who often picks Formula 1 races over tennis matches, sparking playful sibling banter about his priorities.
YouTube Excerpt: Did you know Jannik Sinner's biggest supporter isn't a tennis player—but a hardcore Formula 1 fan? Meet
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Marc Sinner - Latest Information & Updates 2026 Information & Biography
Details: $78M - $110M
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Last Updated: April 2, 2026
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