Heath Sims (5-4-2, 4) was born in Huntington Beach, California, U.S. on October 14, 1971. At the age of 30 years on April 12, 2002, he made his professional MMA debut against Steve Bruno, winning the fight via 2-round unanimous decision.
Sims' last fight was a 1st-round submission loss to John Cronk at age 34 on February 24, 2006. He retired from the sport of MMA following this loss.
Some of Heath Sims' best fights have been against Steve Berger and Takafumi Ito.
Sims has 4 losses on his MMA record.
| # | Date | Opponent | Promotion | Weight | Round | Method | Result |
|---|---|---|---|---|---|---|---|
11 | Feb 24, 2006 34 years, 4 months 5-4-2 (4) | John Cronk | 1 | SUB | LOSS Guillotine choke | ||
10  | Mar 26, 2005 33 years, 5 months 5-3-2 (4) | 31 years, 10 months 16-11-2 (13) | 3 | TKO | WIN Cut | ||
9 | Feb 4, 2005 33 years, 3 months 4-3-2 (3) | Katsuya Inoue | Pancrase | 1 | TKO | LOSS Punches | |
8  | Sep 24, 2004 32 years, 11 months 4-2-2 (3) | 24 years, 7 months 10-5-7 (3) | Pancrase | 3 | UD | DRAW | |
7 | Jul 25, 2004 32 years, 9 months 4-2-1 (3) | Takafumi Ito | Pancrase | 1 | TKO | WIN Punches | |
6 | Mar 19, 2004 32 years, 5 months 3-2-1 (2) | Brad Gumm | 2 | SUB | WIN Punches | ||
5 | Feb 6, 2004 32 years, 3 months 2-2-1 (1) | Koji Oishi | Pancrase | 3 | UD | DRAW | |
4  | Aug 31, 2003 31 years, 10 months 2-2 (1) | 26 years, 11 months 13-8-1 (10) | Pancrase | 3 | UD | LOSS | |
3 | Nov 9, 2002 31 years 2-1 (1) | Antonio McKee | 3 | UD | LOSS | ||
2 | Jul 13, 2002 30 years, 8 months 2-0 (1) | Paul Gardner | 3 | TKO | WIN Punches | ||
1  | Apr 12, 2002 30 years, 5 months 1-0 (0) | 20 years, 5 months 2-0 (2) | 2 | UD | WIN |
