Just a couple of years ago, a frustrating run of injuries left Jack Draper thinking he "wasn't cut out for tennis."
But on Wednesday, he will have the chance to become the first British man to reach the US Open singles semi-finals since Andy Murray won the title in 2012.
Draper will play Australian 10th seed Alex de Minaur in the quarter-finals from around 19:00 BST, with commentary on BBC Radio 5 Live and the BBC Sport website and app.
Draper, long tipped as one of British tennis' great prospects, will hope this is the start of things to come.