Who knew the Iceman was this much of a daredevil as a kid? A former coach just revealed that Jannik Sinner used to somersault off rooftops on skis in the Alps, leaving his mom, Siglinde, in constant panic mode. Fans can’t stop joking about how relieved she must be now that he’s breaking records on the court instead of bones on the slopes. This backstory really adds a new layer to Sinner’s cool under pressure! #Sports #Tennis #JannikSinner