Yes, you can use Betfair in the USA.\n\n Therefore, US residents that live outside the particular state, would need to use a VPN, like Atlas VPN, to change their IP to the New Jerseyan one.
We use a 3rd party data provider called 'Opta' to settle our Shot & Shot on Target markets. Although Opta make every effort to ensure their data collection is as accurate as possible, they can sometimes review the statistics and make amendments.