|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.
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 & head, kicks to a downed opponent, small joint manipulation, and hair pulling all became officially illegal.
|Heavyweight||Maurice Smith||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||15:00||[c]|
|Heavyweight||Alex Hunter||def.||Harry Moskowitz||Decision||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.