Novak Djokovic felt he produced his best performance of the year in breezing past Federico Coria at the Belgrade Open for a milestone victory. World number one Djokovic needed a little under an hour to beat Coria 6-1 6-0 on Thursday and set up a semi-final with Andrej Martin on home soil.
The victory moves the 34-year-old above Argentine great Guillermo Vilas for the fifth-most victories in the Open Era with 952.
He is 70 wins adrift of fourth-placed Rafael Nadal (1,022). Ivan Lendl (1,068) is third, behind Roger Federer (1,243), with Jimmy Connors holding the record of 1,274 wins.
Djokovic won 53 of the 75 points played against Coria and dropped just one game to remain on course for a third crown in Serbia ahead of the French Open.
"It was a great display," Djokovic said in his on-court interview. "It's probably one of the best matches, if not the best match, I played this year. I felt fantastic from the first point.
"It was the first time that I played against Coria and I tried to impose an aggressive style from the very beginning and not allow him to have too much time to play around. I played a phenomenal second set, really flawless.
"It's not always possible to play like this. But I think this definitely helps me feel better on the court. I think everything worked perfectly for me today."
Martin awaits Djokovic in the last four after the world number 119 recovered from a set down to beat Dusan Lajovic 3-6 6-3 6-4.
Alex Molcan remains in the hunt for a shock triumph in Belgrade, meanwhile, after beating Fernando Verdasco 6-2 6-0 to set up a showdown with Federico Delbonis.
Eighth seed Delbonis advanced to his second semi-final of the season following Roberto Carballes Baena's withdrawal through illness.
At the Emilia-Romagna Open in Parma, Sebastian Korda eliminated Yoshihito Nishioka to set up an all-American semi-final with Tommy Paul, who took down Jan-Lennard Struff with a 6-2 6-4 victory.
Richard Gasquet was another seeded player to fall as he lost 6-1 6-1 to Jaume Munar, with the Spaniard now set to take on Italian wild card Marco Cecchinato – a straight-sets winner against lucky loser Norbert Gombos – for a place in the final.