Anyway sport is trivial in the grand scheme of things so that isn't too important, except for the fact that it reveals a more important underlying truth- that being born later in the school year hinders children's development more generally:
Research by the Institute for Fiscal Studies two years ago found only 53% of girls and 47% of boys born in August reached the expected educational level at age seven in state primary schools in England, compared with 80% and 70% of those born in September.So if we want to increase standards in schools and help all pupils achieve their potential, why not split the school year up? Instead of each class consisting of a cohort born within a 12 month period, why not have them born within a 6 month period? It might be more expensive, although only for smaller schools, and it would probably require a rejigging of the whole school calender, but there isn't any reason that should be set in stone. The expense may be offset though by having fewer behavioural difficulties and needing less in the way of additional assistance for late born children as they will be less likely to be misdiagnosed as having special needs.
Plus we could end up with a better football team!