Joe Louis won and then defended the heavyweight title 25 times in a row. He was a champion for 13 years. Louis still holds the record for defending the title in the same weight class a number of times. According to the boxing scene, the record has been considered unbeatable.

But now Cecilia Bräckhus threatens the boxing icon's record. She can be left alone in 26 title matches won in the same weight class (welterweight ) if she wins against the American Jessica McCaskill the night before Sunday Swedish time.

- I am mentally prepared and right now I feel relaxed and good, says Bräckhus to Insider.

38-year-old Bräckhus meets 35-year-old McCaskill at an open air event in Tulsa, Oklahoma.