|UFC 15: Collision Course|
|Promotion||Ultimate Fighting Championship|
|Date||October 17, 1997|
|Venue||Casino Magic Bay St. Louis|
|City||Bay St. Louis, Mississippi|
UFC 15: Collision Course was a mixed martial arts event held by the Ultimate Fighting Championship on October 17, 1997, in Bay St. Louis, Mississippi. The event was seen live on pay-per-view in the United States, and later released on home video.
UFC 15 was headlined by a UFC Heavyweight Championship bout between Maurice Smith and Tank Abbott. Abbott was brought in as a last-minute replacement for Dan Severn, who couldn't fight because of an injured hand.
UFC 15 featured a Superfight between Randy Couture and Vitor Belfort, a Heavyweight Tournament, and two alternate bouts. The Superfight was billed as a Heavyweight Title Elimination bout, which can be described as a #1 Contender's match, meaning the winner would advance to compete for the UFC Heavyweight Championship at the next event, UFC Japan.
Collision Course marked a major change in the UFC's rules, with limitations set on permissible striking areas. Headbutts, groin strikes, strikes to the back of the neck and head, kicks to a downed opponent, small joint manipulation, and hair pulling all became officially illegal.
|Heavyweight||Maurice Smith (c)||def.||Tank Abbott||Submission (exhaustion)||8:08||[a]|
|Heavyweight||Randy Couture||def.||Vitor Belfort||TKO (punches)||8:16|
|Heavyweight||Mark Kerr||def.||Dwayne Cason||Submission (rear-naked choke)||0:53||[b]|
|Heavyweight||Mark Kerr||def.||Greg Stott||KO (knee)||0:17|
|Heavyweight||Dave Beneteau||def.||Carlos Barreto||Decision (unanimous)||15:00||[c]|
|Heavyweight||Alex Hunter||def.||Harry Moskowitz||Decision (split)||12:00|
|Heavyweight||Dwayne Cason||def.||Houston Dorr||TKO (punches)||3:43|
- Smith defeated Abbott to remain the UFC Heavyweight Champion.
- Cason replaced Dave Beneteau who could not continue due to fatigue.
- Due to fatigue, Beneteau was unable to continue in the tournament.
UFC 15 Heavyweight Tournament Bracket
1 Dwayne Cason replaced Dave Beneteau who withdrew due to fatigue.