Feliciano Lopez reached the milestone of 500 ATP Tour wins with a comeback victory over Karen Khachanov at the Mallorca Championships.
Lopez, who turns 40 in September, prevailed 4-6 6-2 6-4 against the sixth seed.
He is the 10th active player to reach 500 wins, after Roger Federer, Rafael Nadal, Novak Djokovic, Andy Murray, Richard Gasquet, Fernando Verdasco, Marin Cilic, Stan Wawrinka and Tommy Robredo.
"More than the 500 wins, the important thing to me is the chance to keep playing in these kinds of tournaments and to keep being competitive," Lopez told ATPTour.com.
"I didn’t expect to be able to play at the level I am on the ATP Tour at 40 years of age, which I will be in September."
Spanish veteran Lopez would have expected to be taking on Dominic Thiem next, but the world number five retired due to a wrist injury when 5-2 to the good in the opening set against Adrian Mannarino.
"It's nice for me to be in the quarter-finals, but winning this way is not so cool. I really like Dominic, he's such a nice guy and I hope he will be feeling better soon," Mannarino said. "I hope it is not so serious, especially right before Wimbledon."
Elsewhere on the Balearic island, top seed Daniil Medvedev breezed past Corentin Moutet 6-4 6-2, while Casper Ruud defeated Tennys Sandgren in straight sets.
At the Viking International in Eastbourne, there were mixed fortunes for Lopez's countrymen Alejandro Davidovich Fokina and Albert Ramos-Vinolas.
Fokina, seeded sixth, saw off Mikael Ymer 7-5 6-1, but number seven seed Ramos-Vinolas fell 6-4 6-3 to Emil Ruusuvuori.
Alexander Bublik defeated fellow Kazakh Mikhail Kukushkin is straight sets, while Jo-Wilfred Tsonga went down in similar fashion against Egor Gerasimov.