Methodology / Competition Depth Index

Competition Depth Index

Every depth multiplier in the cross-sport model comes from six published sub-factors, each scored 0–100 with football as the reference point. The weighted mean, divided by 100, is the multiplier. Nothing is set by opinion after the fact — change a sub-factor and the multiplier changes with it.

Depth = Σ(sub-factor × weight) / 100 · applied as (0.65 + 0.35 × depth^1.25)

Sub-factors and weights

Global participation 25%: Size of the amateur base worldwide, from federation participation surveys. Football's ~250m registered and casual players is the 100 reference.
Professional competitors 20%: How many people earn a living competing at the top of the sport, across all national leagues and circuits.
Geographic reach 20%: How many countries field genuinely competitive athletes, not just how many federations are members.
Professional ecosystem 15%: Depth of the professional machinery: academies, coaching, medicine, scouting, prize money and year-round calendars.
Historical competitive density 10%: How hard the sport's own history has been to win: number of credible contenders per era across the tracked period.
Open talent pathway 10%: How open the route from beginner to elite is. Sports needing costly facilities, equipment or one national league score lower.

Per-sport scores

Sport	Global participation	Professional competitors	Geographic reach	Professional ecosystem	Historical competitive density	Open talent pathway	Index	Depth
Football	100	100	100	100	100	100	100.00	×1.00
Basketball	98	97	98	100	100	97	98.20	×0.98
Swimming	100	90	100	94	99	100	97.00	×0.97
Athletics	100	89	100	91	97	100	96.15	×0.96
Boxing	97	93	98	91	98	99	95.80	×0.96
Cricket	94	96	86	100	97	92	93.80	×0.94
Tennis	95	89	97	96	93	87	93.35	×0.93
American Football	82	100	70	100	100	88	88.30	×0.88
Ice Hockey	82	94	78	100	97	84	88.00	×0.88
Baseball	78	95	71	100	97	82	85.60	×0.86
Volleyball	89	77	87	79	83	85	83.70	×0.84
Golf	80	82	84	90	78	72	81.70	×0.82
Formula 1	66	72	96	100	98	50	79.90	×0.80
Table Tennis	86	69	81	71	79	81	78.15	×0.78
Esports	85	68	81	66	70	83	76.25	×0.76

Why each sport lands where it does

Football ×1.00

~250 million players · 211 member associations · Open: free to play, scouting networks on every continent

The reference point of the scale (×1.00). No other sport combines a comparable participation base with a fully professional pyramid in every region.

FIFA Big Count / FIFA member list

Basketball ×0.98

~450 million participants (recreational included) · 212 member federations · Open, but elite pathway concentrated in NBA/EuroLeague

Huge recreational base and near-universal federation coverage, marginally below football because the professional top tier is narrower and more height-selective.

FIBA member federations

Swimming ×0.97

Very large learn-to-swim base, 200+ nations at Olympic level · 209 member federations · Requires pool access; otherwise objective, time-based selection

Almost universal federation coverage and a purely objective clock, reduced slightly because pool infrastructure is unevenly distributed.

World Aquatics

Athletics ×0.96

Largest global base for running events · 214 member federations · The most open of all sports at entry level; discipline-dependent at elite level

Scored at sport level as ×0.96 and then refined per discipline: sprinting draws from effectively everyone, while pole vault or throws require facilities, coaching and equipment.

World Athletics

Boxing ×0.96

Practised in almost every country, low equipment barrier · ~200 national federations (amateur) plus four major pro bodies · Very open entry, fragmented and politicised professional route

Depth of raw talent is close to football, but fragmented titles and negotiated matchmaking mean the best do not always meet, which is handled in the Dominance pillar rather than in the multiplier.

World Boxing / IBA membership

Cricket ×0.94

~30 million+ players, concentrated in South Asia, England, Australasia, Southern Africa · 108 members, 12 with Test status · Deep pyramid where played, almost absent elsewhere

Extremely deep inside its regions — the Indian pyramid alone rivals most sports globally — but a small number of nations contest the highest level.

ICC members

Tennis ×0.93

~87 million players · 213 national associations · Globally open ranking system, but high cost of junior development

Truly global ranking ladder anyone can enter, discounted because coaching, travel and court costs filter the pyramid long before the professional level.

ITF Global Tennis Report

Ice Hockey ×0.88

~1.8 million registered players · 83 member associations · Narrow: requires ice, expensive equipment, cold-climate infrastructure

A professional and highly competitive top league, but the registered base is roughly two orders of magnitude smaller than football's and geographically concentrated.

IIHF survey of players

American Football ×0.88

~5 million players, overwhelmingly in the United States · American football played competitively in ~70 countries · Single dominant league with a college feeder system

Ferocious internal competition — a US high-school-to-NFL funnel of enormous selectivity — but effectively one national talent pool.

IFAF / NFL participation reporting

Baseball ×0.86

~65 million participants, concentrated in the Americas and East Asia · Baseball/softball active in ~140 countries · Deep professional systems in the US, Japan, Korea, Caribbean

Several genuinely deep national pyramids feeding one another, but large parts of the world are absent from the elite pool.

WBSC

Volleyball ×0.84

Very large recreational base, smaller professional tier · 222 national federations · Wide participation, comparatively thin professional economy

The widest federation membership of any sport here, discounted because professional earnings and full-time pathways exist in a limited number of leagues.

FIVB

Golf ×0.82

~65 million players · 150+ national federations · Open qualifying exists, but cost and course access are a hard filter

Global tours and open qualifying keep the elite pool genuinely international, while green fees, equipment and course access shrink the pyramid beneath it.

R&A Golf Around the World

Formula 1 ×0.80

20 race seats worldwide · FIA: 240+ member organisations in 149 countries · Closed: karting-to-F1 progression costs millions of euros

The steepest financial filter in sport. The selection is real and brutal, but it selects on funding as well as talent, and machinery differences determine a large share of results.

FIA members

Table Tennis ×0.78

Very large casual base, elite level dominated by a few nations · 226 member associations · Open, but the top is overwhelmingly one national system

Enormous casual participation does not translate into a globally distributed elite; the practical competitive pool for world titles is narrow.

ITTF

Esports ×0.76

Hundreds of millions of players, but per-title and short-lived · No single governing body; publisher-run circuits · Extremely open entry, very short competitive lifespans

Entry is the most open of any sport, but each title is its own ecosystem, games change or die, and careers rarely last a decade — which limits comparability of long careers, not the quality of the players.

Valve Counter-Strike Global Standings