| Event Details | |
|---|---|
| Organization | World Fighting Alliance |
| Name | WFA 4 - King of the Streets |
| Date | July 22nd, 2006 |
| Venue | Great Western Forum |
| Location | Los Angeles, California, United States |
| Fight #1 | |
|---|---|
| Middleweight Bout | |
  |
  |
| Martin Kampmann | Edwin Aguilar |
| Martin Kampmann via TKO (Punches) | |
| Time Round 1 @ 2:43 |
Referee Cecil Peoples |
| Fight #2 | |
|---|---|
| Light Heavyweight Bout | |
 |
 |
| Marvin Eastman | Jorge Oliveira |
| Draw (Unanimous) | |
| Time Round 3 @ 5:00 |
Referee Nelson Hamilton |
| Fight #3 | |
|---|---|
| Lightweight Bout | |
|
|
| Rob McCullough | Harris Sarmiento |
| Rob McCullough via Decision (Unanimous) | |
| Time Round 3 @ 5:00 |
Referee Herb Dean |
| Fight #4 | |
|---|---|
| Heavyweight Bout | |
|
|
| Ricco Rodriguez | Ron Waterman |
| Ricco Rodriguez via TKO (Doctor Stoppage) | |
| Time Round 1 @ 5:00 |
Referee Nelson Hamilton |
| Fight #5 | |
|---|---|
| Middleweight Bout | |
|
|
| Ivan Salaverry | Art Santore |
| Ivan Salaverry via TKO (Punches) | |
| Time Round 2 @ 4:18 |
Referee Cecil Peoples |
| Fight #6 | |
|---|---|
| Middleweight Bout | |
|
|
| Jason Miller | Lodune Sincaid |
| Jason Miller via Submission (Rear-Naked Choke) | |
| Time Round 1 @ 4:29 |
Referee Herb Dean |
| Fight #7 | |
|---|---|
| Light Heavyweight Bout | |
 |
|
| Lyoto Machida | Vernon White |
| Lyoto Machida via Decision (Unanimous) | |
| Time Round 3 @ 5:00 |
Referee Nelson Hamilton |
| Fight #8 | |
|---|---|
| Heavyweight Bout | |
 |
|
| Bas Rutten | Ruben Villareal |
| Bas Rutten via TKO (Leg Kicks) | |
| Time Round 1 @ 3:24 |
Referee Josh Rosenthal |
| Fight #9 | |
|---|---|
| Light Heavyweight Bout | |
 |
|
| Quinton Jackson | Matt Lindland |
| Quinton Jackson via Decision (Split) | |
| Time Round 3 @ 5:00 |
Referee Herb Dean |