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player welfare

The tension at the centre of this debate is commercial rather than medical. Afternoon kick-off slots align with prime-time television audiences in Europe and Asia, generating the broadcast revenue that funds the tournament, while the coolest and safest playing windows fall overnight local time in many host cities. Players' representative bodies have been consistent in arguing that welfare should take precedence over scheduling convenience, but organisers have historically balanced that demand against the financial reality that broadcast rights fund almost everything else in the game.

• Cooling breaks are now written into match protocols when pitch-side heat indices cross agreed thresholds, typically inserted near the half-hour mark of each half.
• Kick-off times for the most heat-exposed venues have been shifted later into the evening compared with earlier tournament cycles, though not as consistently as medical advisors have requested.
• Hydration strategies have moved from generic advice to individualised sweat-rate testing for squads with the medical resources to run it.
• Substitution allowances have been expanded in some competitions specifically to manage heat load, separate from injury substitutions.