At 48 years old, Forrest Petz has this physical status:
Petz made his UFC debut at Ultimate Fight Night 6 against Sammy Morgan. He won via unanimous decision with one of the judges scoring the fight 30-23 including one of the only 10-7 rounds in UFC history. This is the most lopsided scorecard for a three-round fight in UFC history. Petz's 5 knockdowns of Morgan are also a UFC record.
He lost his next two bouts to Marcus Davis and Kuniyoshi Hironaka before rebounding with a win over Luigi Fioravanti. After losing his next fight against Josh Burkman, Petz was released from the organization with a 2–3 record.
Petz was re-signed with the UFC, stepping in as a late replacement to fight Daniel Roberts on July 3, 2010, at UFC 116. He lost the fight via split decision.
Petz then faced Brian Foster on September 15, 2010, at UFC Fight Night 22. He lost the fight via TKO in the first round. Following the loss he was once again released by the UFC.
After winning three fights following his release from the UFC, Petz joined the Score Fighting Series. In his first bout with SFS, he won the night's Fight of the Night with a TKO win over Sergey Juskevic.
After winning his SFS debut, Petz again fought for the Score Fighting Series in Hamilton, Ontario on November 23, 2012. He faced Canadian prospect Jordan Mein in the main event. He lost via TKO early in the first round.