Britain's Miles Kasiri battled past American Alex Kuznetsov 6-4 7-6 in the second round of the boys' singles event at the US Open. The Wimbledon finalist was made to work hard by the fourth seed as he clinched the second set tie-break 7-5.
The 18-year-old is bidding to win his first Grand Slam title before embarking on his professional career.
Britain's Tom Rushby fell 6-4 7-5 to American Scott Oudsema in his second round match on Monday.