Answer
Wladimir Klitschko dealt Povetkin his first professional defeat in 2013. Klitschko, known for his dominant reign as heavyweight champion, outboxed Povetkin with his superior reach and footwork. He landed precise jabs and power punches, eventually knocking Povetkin down in the seventh round. This victory cemented Klitschko's status as one of the greatest heavyweights of all time and marked a significant setback for Povetkin's career.