Cameron Norrie set up a last-16 clash with Novak Djokovic at the Italian Open thanks to a 6-2 7-6 (4) victory over Marton Fucsovics.
The British number one had looked on track for a straightforward triumph as he won the first set with minimal fuss and then stormed into a 5-1 lead in the second, only for his Hungarian opponent to fight back to 5-5.
Norrie edged the tie-break which followed, 7-4, however, and will next face Djokovic after the world number one continued his winning run by overcoming Grigor Dimitrov 6-3 4-6 6-1.
The Serbian was given a tough test by the Bulgarian, who - having been 3-1 down in the second set - broke twice to force the decider, but the top seed and defending champion rallied to see out the match convincingly.
"(I was) very solid. I think I could have won in straight sets," 22-time grand slam winner Djokovic told the ATP website.
"I was a set and 4-2 up and had a pretty decent forehand in the middle of the court at deuce on his serve and missed that.
"He held his serve well, we had new balls the next game, I did a double fault, the crowd got into it and got behind him and of course the energy of the place and of the match changed.
"I dropped my level a bit, but luckily I managed find it right away in the first game (of the third set), made that crucial break and kind of shifted the momentum to my side, so I'm really pleased with the way I closed out the match."
Russian world number three Daniil Medvedev earned his maiden win at the tournament with a 6-4 6-2 triumph over Finland's Emil Ruusuvuori and expressed his relief at finally winning a match in Rome.
"We can talk about all of the matches I lost here, they were different," Medvedev told the ATP website after reaching the third round.
"The first one,
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