Britain's third seed Andrew Murray recovered from a set down to secure a place in the semi-finals of the junior event at the US Open.
Murray hit back after a poor start against unseeded American Sam Querrey to win 2-6 7-6 (7-2) 6-1.
The victory continues Britain's impressive showing in the juniors section this year.
Along with the United States, Britain have had more players in the third round than any other nation.
Murray's older brother, Jamie, and Wimbledon finalist Miles Kasiri both lost out in the third round on Thursday.
The Murray brothers also made the doubles semi-finals before going down 6-1 6-7 (4-7) 6-4 to Americans Brendan Evans and Scott Oudsema.
Murray's hopes of a first junior Grand Slam title received a massive boost when world number one Gael Monfils suffered a shock defeat in the third round.
Monfils, a winner at the Australian and French Opens as well as Wimbledon, was hoping to become the first person since Stefan Edberg in 1983 to complete a junior Grand Slam.
But Viktor Troicki of Serbia and Montenegro defeated the Frenchman 6-4 6-2.
Murray could have faced Monfils in the semi-finals.
The Scot has been named in Great Britain's Davis Cup squad to face Austria on 25 September.