Jack Draper was unable to secure a major scalp in the second round as he was eliminated by Andrey Rublev at the Madrid Open.
The 20-year-old - who is on the verge of becoming the next British player to break into the top 100 - again showcased his huge potential against sixth seed Rublev - who defeated Novak Djokovic in his home city of Belgrade to win his last tournament.
Draper outfought his Russian opponent to win the first set and took a 3-0 lead in the third and final but could not get to the finish line. Rublev eventually claimed a 2-6 6-4 7-5 victory.
Draper knocked out top-30 player Lorenzo Sonego in the opening round in his first tour-level match on clay and he used his big left-handed serve and forehand to shock Rublev in the early stages.
The young Briton, who took a set off Djokovic at Wimbledon last year, also possesses a fine drop shot and is comfortable at the net, and he battled back from a break down in the second before Rublev moved ahead again.
Draper looked like he might find a way to win when he took the first three games of the decider but, with cramp starting to kick in, it was Rublev who eventually found a way through.