Steve Cantwell is a fighter in the UFC's middleweight divsion who once fought at light-heavyweight. He was the last reigning WEC light-heavyweight champion. He is currently out of action with potentially career-threatening injuries that he suffered causing him to pull out of his planned bout with Vladimir Matyushenko for UFC 108.
He was set to face Ricardo Romero in Romero's debut but instead he pulled out for undisclosed reasons. He was set to finally make his return after his illness, against undefeated debuting Sengoku veteran Stanislav Nedkov. Cantwell was injured the day of the weigh-ins and pulled out of the fight and the bout was cancelled altogether. Both men were paid their money for showing up.
Cantwell finally made his return against striker Cyrille Diabate in 2011. He lost via dominant unanimous decision.
Cantwell next dropped to middleweight to face Mike Massenzio in what many fans considered to be a loser-leaves-town matchup. Massenzio defeated Cantwell via impressive upset unanimous decision, breaking Cantwell's nose in the process.
Cantwell next faced Riki Fukuda in a loser-leaves-town matchup in Japan. Fukuda defeated Cantwell via unanimous decision and afterwards Cantwell was cut from the UFC and justifiably so.
- Brian Stann vs. Steve Cantwell 1 - The fight was the WEC debut of both undefeated men and the first loss of Steve Cantwell. First Lieutenant Brian Stann dedicated the victory to his four fallen comrades.
- Luis Cane vs. Steve Cantwell - Cantwell was on a four-fight win streak.
- Brian Stann vs. Steve Cantwell 3 - The fight was the rubber match between the two men.
- Riki Fukuda vs. Steve Cantwell - Cantwell was cut after the bout, which was Riki Fukuda's first official UFC victory.