The Complete Guide to Combat Sports: Underground to Professional
Combat sports exist on a spectrum. On one end, two people settle a dispute in a backyard with no rules and no audience. On the other, world champions compete in arenas with millions watching on pay-per-view. This guide maps the entire landscape, showing how every discipline and organization connects.
The Combat Sports Spectrum
| Level | Examples | Regulation | Pay | Audience | Medical |
|---|---|---|---|---|---|
| Street Level | Informal fights, mutual combat | None | None | Bystanders | None |
| Organized Underground | Streetbeefs, Strelka, KOTS | Minimal | $0-$500 | Local + YouTube | Basic |
| Semi-Professional | Rough N' Rowdy, Top Dog FC, BKB | Partial | $500-$10,000 | Regional + Online | Moderate |
| Professional Underground | BKFC, Gamebred BKMMA | Licensed | $2,500-$500,000 | National + PPV | Full |
| Professional Mainstream | UFC, Boxing, Bellator | Full | $10,000-$10M+ | Global | Full |
Striking Disciplines
Boxing (Gloved)
The most established combat sport, with professional organizations including the WBA, WBC, IBF, and WBO. Underground variants include Rough N' Rowdy, amateur backyard boxing at Streetbeefs, and pub boxing at King of the Ring NZ.
Bare Knuckle Boxing
Fighting without gloves, the original form of boxing. Modern organizations include:
- BKFC - Largest sanctioned promotion globally
- BKB - UK-based promotion
- Top Dog FC - Russian YouTube powerhouse
- UBKB - UK promotion
- Valor Bare Knuckle - US regional promotion
- Spartan Bareknuckle - UK/European promotion
See BKFC vs BKB and bare knuckle vs gloved boxing for detailed comparisons.
Kickboxing & Muay Thai
Striking sports incorporating kicks, knees, and elbows. Professional organizations include Glory, ONE Championship, and K-1. Underground kickboxing exists but is less organized than underground boxing.
Lethwei
Burmese bare knuckle martial art allowing headbutts. Known as "The Art of Nine Limbs." The most brutal striking discipline. See Lethwei complete guide and Lethwei FC guide.
Slap Fighting
A striking format where competitors take turns delivering open-palm strikes. Power Slap is the dominant professional organization. See Power Slap complete guide.
Grappling Disciplines
Wrestling
Foundational grappling discipline with Olympic variants (Freestyle, Greco-Roman) and traditional forms including Pehlwani/Kushti, Glima, and Laamb Wrestling.
Brazilian Jiu-Jitsu (BJJ)
Ground-based grappling art focused on submissions. Professional competition circuit includes ADCC, IBJJF, and Who's Number One. Underground BJJ matches exist but are less visible than striking-based underground events.
Judo
Olympic throwing art with underground applications in self-defense and cross-discipline competition.
Mixed Disciplines
Mixed Martial Arts (MMA)
Combines striking and grappling. Professional organizations: UFC, Bellator, ONE Championship, PFL. Underground variants include Streetbeefs, Backyard Squabbles, and AWFC.
Bare Knuckle MMA
MMA without gloves. Gamebred Bareknuckle MMA is the leading promotion.
Vale Tudo
Brazilian "anything goes" fighting. The ancestor of modern MMA. See Vale Tudo complete guide.
Traditional & Cultural Combat Sports
| Sport | Origin | Active Status | Key Feature |
|---|---|---|---|
| Calcio Storico | Italy (16th century) | Active (annual) | 27v27 team combat in Florence |
| Dambe | Nigeria | Active | One wrapped fist ("spear"), one bare ("shield") |
| Laamb Wrestling | Senegal | Active | Cultural wrestling with mystical elements |
| Musangwe | South Africa | Active | Venda tribal fighting tradition |
| Pehlwani/Kushti | India | Active | Traditional wrestling in earth pits |
| Glima | Iceland | Active | Viking wrestling tradition |
| Bokator | Cambodia | Active | Ancient Khmer martial art |
| Oil Wrestling | Turkey | Active | Wrestlers coated in olive oil |
| Tinku | Bolivia | Active | Festival fighting ritual |
| Lethwei | Myanmar | Active | Bare knuckle with headbutts |
| Irish Traveller Boxing | Ireland/UK | Active | Bare knuckle clan tradition |
The Pathway: Underground to Professional
Many fighters begin in underground organizations and transition to professional careers. Here is the typical progression:
Step 1: Local Underground (0-6 months)
Start at an accessible organization like Streetbeefs or a local gym's amateur fight night. No experience required. See how to prepare for your first underground fight.
Step 2: Established Underground (6-18 months)
Move to more competitive organizations like Rough N' Rowdy, KOTS, or Top Dog FC. Begin building a record.
Step 3: Semi-Professional (1-3 years)
Compete for organizations with some regulatory oversight. Pursue amateur boxing or MMA records through state-sanctioned events.
Step 4: Professional (3+ years)
Apply to professional organizations like BKFC, regional MMA promotions, or professional boxing through a licensed manager.
For a detailed roadmap, see backyard to pro MMA guide.
Organization Tiers
Tier 1: Professional / Licensed
| Organization | Discipline | Valuation | Global Reach |
|---|---|---|---|
| UFC | MMA | $12B+ | Global |
| BKFC | Bare Knuckle | $350M | 100+ countries |
| Power Slap | Slap Fighting | $200M | US + international |
| Bellator | MMA | $500M+ | Global |
Tier 2: Semi-Professional
| Organization | Discipline | Revenue | Reach |
|---|---|---|---|
| Top Dog FC | Bare Knuckle | $12M | 8.2M YouTube |
| Rough N' Rowdy | Boxing | $8M | US |
| Gamebred BKMMA | BK MMA | $6M | US |
| BKB | Bare Knuckle | $4M | UK |
Tier 3: Organized Underground
| Organization | Discipline | Revenue | Reach |
|---|---|---|---|
| Streetbeefs | MMA/Boxing | $1.2M | 3.4M YouTube |
| KOTS | Bare Knuckle | $800K | 750K YouTube |
| Strelka | Street Fighting | $2M | 1.8M YouTube |
| Backyard Squabbles | MMA/Boxing | $500K | 950K YouTube |
| StreetBeefz UK | MMA/Boxing | $100K | 280K YouTube |
| Scrapyard FC | MMA/Boxing | $80K | 180K YouTube |
Training for Combat Sports
Regardless of the level you compete at, these are the essential training components:
| Component | Importance | Resources |
|---|---|---|
| Boxing fundamentals | Essential | How to throw a punch properly |
| Conditioning | Essential | Cardio training for fighters |
| Grappling basics | Important (MMA) | Grappling in underground fighting |
| Mental preparation | Essential | Mental preparation guide |
| Nutrition | Important | Nutrition for fighters |
| Recovery | Important | Post-fight recovery |
| Weight management | Situational | How to cut weight |
See also: 8-week fight camp and how to train for underground fighting.
Watching Combat Sports
| What You Want | Where to Watch |
|---|---|
| Free underground fights | YouTube (Streetbeefs, Top Dog, Strelka) |
| Bare knuckle boxing PPV | BKFC App, BKB PPV |
| Slap fighting | TBS, Rumble |
| Amateur boxing | Barstool+ |
| Everything in one place | How to watch underground fights |
