BBC Sport explains the regulations around the size, weight and dimensions of footballs, and how much these can vary.

Arsenal boss Mikel Arteta has questioned the change of ball for their Carabao Cup semifinal first-leg defeat to Newcastle ...

Mikel Arteta has suggested Arsenal's failure to adapt to the Carabao Cup ball was a factor in Tuesday's 2-0 semifinal, first ...

Mikel Arteta believes Arsenal's inability to adjust to the Carabao Cup ball played a role in Tuesday's 2-0 semifinal, ...

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