| 2003-11-21 | UFC 45: Revolution | Heavyweight | Wesley Correira def. Tank Abbott | TKO (doctor stoppage) | 1 | 2:14 |
| 2003-06-06 | UFC 43: Meltdown | Heavyweight | Kimo Leopoldo def. Tank Abbott | Submission (arm-triangle choke) | 1 | 1:59 |
| 2003-02-28 | UFC 41: Onslaught | Heavyweight | Frank Mir def. Tank Abbott | Submission (toe hold) | 1 | 0:46 |
| 1998-10-16 | UFC Brazil: Ultimate Brazil | Heavyweight | Pedro Rizzo def. Tank Abbott | KO (punch) | | 8:07 |
| 1998-05-15 | UFC 17: Redemption | Heavyweight | Tank Abbott def. Hugo Duarte | TKO (punches) | | 0:43 |
| 1997-12-21 | UFC Japan: Ultimate Japan | Heavyweight | Tank Abbott def. Yoji Anjo | Decision (unanimous) | 1 | 15:00 |
| 1997-10-17 | UFC 15: Collision Course | Heavyweight | Maurice Smith def. Tank Abbott title | TKO (leg kicks) | | 8:08 |
| 1997-05-30 | UFC 13: The Ultimate Force | Heavyweight | Vitor Belfort def. Tank Abbott | TKO (punches) | | 0:52 |
| 1996-12-07 | UFC: The Ultimate Ultimate 2 | Openweight | Don Frye def. Tank Abbott | Submission (rear-naked choke) | | 1:22 |
| 1996-12-07 | UFC: The Ultimate Ultimate 2 | Openweight | Tank Abbott def. Steve Nelmark | KO (punch) | | 1:03 |
| 1996-12-07 | UFC: The Ultimate Ultimate 2 | Openweight | Tank Abbott def. Cal Worsham | Submission (punches) | | 2:51 |
| 1996-09-20 | UFC 11: The Proving Ground | Openweight | Scott Ferrozzo def. Tank Abbott | Decision (unanimous) | | 18:00 |
| 1996-09-20 | UFC 11: The Proving Ground | Openweight | Tank Abbott def. Sam Adkins | Submission (forearm choke) | | 2:06 |
| 1995-12-16 | UFC: The Ultimate Ultimate | Openweight | Dan Severn def. Tank Abbott | Decision (unanimous) | | 18:00 |
| 1995-12-16 | UFC: The Ultimate Ultimate | Openweight | Tank Abbott def. Steve Jennum | Submission (neck crank) | | 1:14 |
| 1995-07-14 | UFC 6: Clash of the Titans | Openweight | Oleg Taktarov def. Tank Abbott | Submission (rear-naked choke) | | 17:47 |
| 1995-07-14 | UFC 6: Clash of the Titans | Openweight | Tank Abbott def. Paul Varelans | TKO (punches) | | 1:53 |
| 1995-07-14 | UFC 6: Clash of the Titans | Openweight | Tank Abbott def. John Matua | KO (punch) | | 0:20 |