The report says players make small cuts into the back of the sock to ease tension around the calf muscle. Match socks are designed to fit tightly, but that compression can become uncomfortable during repeated sprints, changes of direction and challenges.
The theory is simple: a looser section gives the calf more room to expand during effort. It is not a guaranteed performance aid, but it is a low-risk equipment adjustment that can make a player feel less restricted across 90 minutes.
Cramps are often associated with muscular fatigue, particularly late in demanding matches. Some players believe that reducing pressure from the sock may help the calf cope with repeated bursts of running.
That does not mean the cuts prevent cramps or eliminate injury risk. Hydration, conditioning, recovery and workload remain more important factors. The sock modification is better understood as a comfort measure than a medical solution.
The report also links the habit to psychology. Footballers often rely on repeated routines before major fixtures, and equipment that feels familiar can provide reassurance when the stakes rise.
Saka has reportedly appeared with holes in his socks during major international tournaments, while Bellingham has helped make the look increasingly recognisable. Once a player believes a small adjustment improves comfort, abandoning it can feel unnecessary.
When England face Croatia, the condition of their socks may draw attention before the opening whistle. The more important question will be whether those small details help the team’s key players stay comfortable, mobile and effective as the tournament progresses.