Scores: United Paintball League (UPL) 2018 Regional Championship - Castaic Event #4
Division 3 X-Ball™
Prelims
5 teams, 3 teams advance (top 3)
| Division 3 | 1 | 2 | 3 | 4 | Score | Wins | Avg Mgn |
1.  LVPP OUTKAST | 2-2 | 5-2 | 4-0 | 3-1 | 7 | 3 | 2.25 |
| 2. Los Angeles Critical Red | 4-2 | 3-1 | 5-2 | 1-3 | 6 | 3 | 1.25 |
| 3. Halfway Decent | 5-3 | 2-5 | 2-5 | 5-3 | 4 | 2 | -0.5 |
| 4. Arizona Outlaws | 2-2 | 1-3 | 4-2 | 3-5 | 3 | 1 | -0.5 |
| 5. NorthSide Elite | 3-5 | 2-4 | 0-4 | 2-4 | 0 | 0 | -2.5 |
Semi-Finals
| Division 3 | 1 | Score | Wins | Avg Mgn |
| Los Angeles Critical Red | 3-1 | 2 | 1 | 2 |
| Halfway Decent | 1-3 | 0 | 0 | -2 |
Finals
| Division 3 | 1 | Score | Wins | Avg Mgn |
| LVPP OUTKAST | 3-2 | 2 | 1 | 1 |
| Los Angeles Critical Red | 2-3 | 0 | 0 | -1 |
Division 5 X-Ball™
Prelims
8 teams, 4 teams advance (top 4)
| Division 5 | 1 | 2 | 3 | 4 | Score | Wins | Avg Mgn |
| 1. Dekoi | 1-2 | 3-0 | 2-1 | 3-0 | 6 | 3 | 1.5 |
| 2. Felons | 4-1 | 3-0 | 3-1 | 0-3 | 6 | 3 | 1.25 |
| 3. NorthSide 2.0 | 2-1 | 4-1 | 1-1 | 1-1 | 6 | 2 | 1 |
| 4. SLO Incendiary | 2-1 | 0-3 | 1-1 | 3-0 | 5 | 2 | 0.25 |
| 5. Los Angeles Critical Blue | 1-4 | 1-1 | 3-0 | 1-1 | 4 | 1 | 0 |
| 6. L.A. KnuckleHeads Grey | 3-0 | 1-4 | 1-3 | 2-2 | 3 | 1 | -0.5 |
| 7. Giant Tactical Assassins D5 | 1-2 | 1-1 | 1-2 | 2-2 | 2 | 0 | -0.5 |
| 8. Riverside Quake | 0-3 | 0-3 | 0-3 | 0-3 | 0 | 0 | -3 |
Semi-Finals
| Wild | Division 5 | 1 | Score | Wins | Avg Mgn |
| 1 | NorthSide 2.0 | 3-2 | 2 | 1 | 1 |
| 3 | Felons | 2-3 | 0 | 0 | -1 |
| 2 | Dekoi | 3-1 | 2 | 1 | 2 |
| 4 | SLO Incendiary | 1-3 | 0 | 0 | -2 |
Finals
| Wild | Division 5 | 1 | Score | Wins | Avg Mgn |
| 1 | Dekoi | 2-1 | 2 | 1 | 1 |
| 2 | NorthSide 2.0 | 1-2 | 0 | 0 | -1 |
| 3 | SLO Incendiary | 2-1 | 2 | 1 | 1 |
| 4 | Felons | 1-2 | 0 | 0 | -1 |