Pete Williams, a seasoned mixed martial artist, competed with a record of 12 wins, 6 losses, and no draws. He established himself in the heavyweight division, weighing 235 lbs. Standing at 6' 3", Williams demonstrated an orthodox stance in the octagon. Throughout his UFC career, he averaged a striking accuracy of 62%, absorbing approximately 2.77 strikes per minute while maintaining a strike defense of 40%. His takedown attempts were frequent, with an average of 1.84 successful takedowns every 15 minutes, and a takedown accuracy of 40%. Williams' most notable victory came against Mark Coleman, who held an ELO rating of 1102 at the time. In his recent fight history, he won against Travis Fulton via armbar in May 1999. However, he faced losses against Kevin Randleman, Semmy Schilt, Ricco Rodriguez, and Frank Mir, with the latter defeat occurring in March 2002 via submission.
| Date | Event | Opponent | Method | Round | Time | Result |
|---|---|---|---|---|---|---|
| 2002-03-22 | UFC 36: Worlds Collide | Frank Mir | SUB Other - Lock | 1 | 0:46 | Loss |
| 2001-11-02 | UFC 34: High Voltage | Ricco Rodriguez | KO/TKO Punches | 2 | 4:02 | Loss |
| 2001-05-04 | UFC 31: Locked and Loaded | Semmy Schilt | KO/TKO Punch | 2 | 1:28 | Loss |
| 1999-11-19 | UFC 23: Ultimate Japan 2 | Kevin Randleman | U-DEC | 5 | 5:00 | Loss |
| 1999-05-07 | UFC 20: Battle for the Gold | Travis Fulton | SUB Armbar | 1 | 6:28 | Win |
| 1999-03-05 | UFC 19: Ultimate Young Guns | Jason Godsey | SUB Kneebar | 1 | 1:56 | Win |
| 1998-10-16 | UFC - Ultimate Brazil | Tsuyoshi Kohsaka | U-DEC | 2 | 3:00 | Loss |
| 1998-05-15 | UFC 17: Redemption | Mark Coleman | KO/TKO Kick | 2 | 0:38 | Win |
| Fight # | Date | Opponent Name | Opponent ELO | Result | ELO Gained | ELO |
|---|---|---|---|---|---|---|
| 8 | 2002-03-22 | Frank Mir | 1022 | Loss | -15 | 984 |
| 7 | 2001-11-02 | Ricco Rodriguez | 1022 | Loss | -16 | 999 |
| 6 | 2001-05-04 | Semmy Schilt | 1000 | Loss | -18 | 1015 |
| 5 | 1999-11-19 | Kevin Randleman | 1018 | Loss | -18 | 1033 |
| 4 | 1999-05-07 | Travis Fulton | 1000 | Win | +20 | 1051 |
| 3 | 1999-03-05 | Jason Godsey | 1000 | Win | +21 | 1031 |
| 2 | 1998-10-16 | Tsuyoshi Kohsaka | 1016 | Loss | -16 | 1010 |
| 1 | 1998-05-15 | Mark Coleman | 1102 | Win | +26 | 1026 |