Dennis Siver
17-7-0
(W-L-D)
| Result | Record | Opponent | Method | Event | Date | Round | Time | Location | Notes |
| George Sotiropoulos | UFC 127 | February 27, 2011 | Sydney, Australia, AUS | ||||||
| Win | 17-7 | Andre Winner | Submission (Rear naked choke) | UFC 122: Marquardt vs. Okami | November 13, 2010 | 1 | 3:37 | Oberhausen, Germany | Submission of the Night |
| Win | 16-7 | Spencer Fisher | Decision (Unanimous) | The Ultimate Fighter 11 Finale | June 19, 2010 | 3 | 5:00 | Las Vegas, Nevada, USA | |
| Loss | 15–7 | Ross Pearson | Decision (Unanimous) | UFC Fight Night: Florian vs. Gomi | March 31, 2010 | 3 | 5:00 | Charlotte, North Carolina, USA | Fight of the Night |
| Win | 15–6 | Paul Kelly | TKO (Spinning Back Kick and Punches) | UFC 105: Couture vs. Vera | November 14, 2009 | 2 | 2:53 | Manchester, England | Knockout of the Night |
| Win | 14–6 | Dale Hartt | Submission (Rear Naked Choke) | UFC 99: The Comeback | June 13, 2009 | 1 | 3:23 | Cologne, Germany | |
| Win | 13–6 | Nate Mohr | TKO (Spinning Back Kick and Punches) | UFC 93: Franklin vs. Henderson | January 17, 2009 | 3 | 3:27 | Dublin, Ireland | Knockout of the Night |
| Win | 12–6 | Chas Jacquier | Submission (Guillotine Choke) | Tempel: Mix Fight Gala VII | October 25, 2008 | 1 | 4:21 | Darmstadt, Germany | |
| Loss | 11–6 | Melvin Guillard | TKO (Punches) | UFC 86: Jackson vs. Griffin | July 5, 2008 | 1 | 0:36 | Las Vegas, Nevada, USA | |
| Loss | 11–5 | Gray Maynard | Decision (Unanimous) | UFC Fight Night 12 | January 23, 2008 | 3 | 5:00 | Las Vegas, Nevada, USA | |
| Win | 11–4 | Naoyuki Kotani | KO (Punch) | UFC 75: Champion vs. Champion | September 8, 2007 | 2 | 2:04 | London, England | |
| Loss | 10–4 | Jess Liaudin | Submission (Armbar) | UFC 70: Nations Collide | April 21, 2007 | 1 | 1:21 | Manchester, England | UFC Debut |
| Win | 10–3 | Jim Wallhead | Submission (Armbar) | CWFC – Enter The Rough House | December 9, 2006 | 2 | 3:31 | Nottingham, England | |
| Win | 9–3 | Said Khalilov | Decision (Split) | WFC – World Free Fight Challenge 2 | September 30, 2006 | 3 | 5:00 | Koper, Slovenia | |
| Win | 8–3 | Paul Jenkins | Submission (Heel Hook) | WFC – Europe vs Brazil | May 20, 2006 | 2 | 3:42 | Koper, Slovenia | |
| Loss | 7–3 | Daniel Weichel | Submission (Rear Naked Choke) | Tempel – Mix Fight Gala 3 | May 6, 2006 | 1 | N/A | Darmstadt, Germany | |
| Loss | 7–2 | Arni Isaksson | Submission (Armbar) | CWFC – Enter the Wolfslair | March 5, 2006 | 2 | 4:23 | Liverpool, England | |
| Win | 7–1 | Jonas Ericsson | TKO | CWFC – Enter the Wolfslair | March 5, 2006 | 1 | 0:35 | Liverpool, England | |
| Win | 6–1 | Adrian Degorski | Submission (Armbar) | CWFC – Enter the Wolfslair | March 5, 2006 | 2 | 1:59 | Liverpool, England | |
| Loss | 5–1 | Fabricio Nascimento | Submission (Kimura) | EVT 5 – Phoenix | October 8, 2005 | 1 | 0:47 | Sweden | |
| Win | 5–0 | Maciej Luczak | Submission (Strikes) | OC – Masters Fight Night | March 26, 2005 | 2 | N/A | Germany | |
| Win | 4–0 | Dylan van Kooten | Submission (Choke) | BFS – Mix Fight Gala 4 | March 6, 2005 | 1 | N/A | Düsseldorf, Germany | |
| Win | 3–0 | Kenneth Rosfort | TKO (Cut) | EVT 4 – Gladiators | September 26, 2004 | 1 | 5:00 | Stockholm, Sweden | |
| Win | 2–0 | Mohammed Omar | Decision | KK 1 – Kombat Komplett 1 | August 7, 2004 | 3 | 5:00 | Trier, Germany | |
| Win | 1–0 | Kordian Szukala | Submission (Strikes) | OC 2 – Lübbecke | February 28, 2004 | 1 | 0:17 | Lübbecke, Germany |
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