I don't have Sky and I think the US Open Tennis is only on this platform in the UK.
However if you open a Bet 365 account and have a positive balance in it (I have a fiver) you get free basic live coverage of most tennis tournaments, including this one.
However if you open a Bet 365 account and have a positive balance in it (I have a fiver) you get free basic live coverage of most tennis tournaments, including this one.