CHICAGO (AP) — Chicago police say an amateur boxing champion successfully fought back attackers who tried to take her cellphone.

Twenty–six–year–old Claire Quinn was headed to the gym earlier this month when a man punched her in the head and demanded her phone.

Quinn is a Chicago Golden Gloves champion and tells The Chicago Tribune she kept punching back with her right hand, while clutching her phone in her left. The attacker gave up.

Authorities say the man, and a teenager involved in the scheme, fled the scene. No arrests have been made.

Quinn says she suffered a concussion and is recuperating with family in Florida. She hopes to continue boxing in October.

Quinn took up boxing in 2015 after gaining weight following knee surgery. She’s a graduate of Chicago’s Columbia College.