Where did I say that it's racist? I said it's not a good comment to make, purely from a logical standpoint.
Why do I think it's not a good comment to make? Because I don't think there should be any relation made to skin color at all in this case. Some of the best soccer players in the world/country just happen to have a certain skin color.
She makes it seem like an all-white team would definitely be worse (or better) compared to the current lineup, even if there were 11 white players objectively better at soccer than all other players that could've made up the team.
She could've said "the team is as good as it is because we didn't discriminate between skin colors when picking the best players". That would've brought her intended message across.