Chael Sonnen put out an open challenge on behalf of O'Malley for his promotion's event on...

Chael Sonnen put out an open challenge on behalf of O'Malley for his promotion's event on December 20, 2020.
About Sean O'Malley
Sean O'Malley is a prominent American mixed martial artist known for his striking prowess and charismatic personality. Competing in the Bantamweight division of the UFC, he has captured the attention of fans worldwide, particularly after winning the UFC Bantamweight Championship.
- Nationality: United States
- Born: October 24, 1994
- MMA record: 20 wins, 3 losses, 1 no contest
- Wins by knockout: 13
- Wins by submission: 1