Marin Cilic said it was a "great achievement" as he joined Novak Djokovic, Rafael Nadal, Roger Federer and Andy Murray in becoming only the fifth active player to make the semi-finals at all four Slams. Cilic, the 2014 US Open champion, fired 33 aces past seventh-seeded Andrey Rublev to reach his first French Open semi-final on Wednesday with a 5-7, 6-3, 6-4, 3-6, 7-6 (10/2) win. He also crashed 88 winners in the four-hour 10-minute tie and will play either eighth-seeded Casper Ruud of Norway or Danish teenager Holger Rune for a place in Sunday's final. "Absolutely fantastic achievement for me. To be mentioned among them," said 33-year-old Cilic. "I'm feeling great on the court, enjoying myself, being me, playing my own game. It's paying off, and I am enjoying the run." Rublev, playing in his fifth quarter-final at the majors, grabbed the first set but wilted under a Cilic barrage over the next two.