US Open final LIVE: Nervy Shelton gifts Zverev opening break with grand slam history on the line

Ben Shelton and Alexander Zverev are competing in the US Open final, with Shelton aiming to become the first American man to win the tournament since Andy Roddick in 2003. Early in the match, Shelton gifted Zverev an opening service break with a nervy start. The match carries significant historical stakes for American tennis.