France's Corentin Moutet defeated American Learner Tien 6-2 7-5 in a tense encounter at the Mallorca Open on Thursday, while Dutch fourth seed Tallon Griekspoor cruised past Canadian sixth seed Gabriel Diallo 6-4 6-4 to reach the semifinals.
Moutet charged through the first set against Tien, winning 6-2, but the start of the second set saw a heated exchange between the Frenchman and the chair umpire over a disputed point awarded to the American.
Tien was given the point after Moutet fell into the net before the ball's second bounce, which Moutet contested.
He initially refused to restart the match before returning visibly frustrated, smashing rackets and expressing his anger.
Despite the setback, he regained composure to seal his first ever grasscourt semifinal berth.
Finished with flair 🪄@moutet99 defeats Tien 6–2 7–5 to reach his maiden career semi-final on grass! 🌱@MallorcaChamps | #MallorcaChampionships pic.twitter.com/KWx0BFPXy0
— ATP Tour (@atptour) June 26, 2025
"I was trying to stay aggressive. He's very good, he's not missing a lot, very solid player," said Moutet, who will next face American third seed Alex Michelsen.
"I lost earlier this year against him, so I knew that I had to be more aggressive today, serve better, and I managed to do it."
Griekspoor, who withdrew from the French Open in the fourth round due to an abdominal injury, controlled the match against the in-form Diallo and secured an early break in the second set before wrapping up victory.
Job done 🫡@Griekii handles Diallo 6–4 6–4 to reach the final four in Mallorca@MallorcaChamps | #MallorcaChampionships pic.twitter.com/2ajgzAaqtu
— ATP Tour (@atptour) June 26, 2025
He will next meet Canadian second seed Felix Auger-Aliassime.
Auger-Aliassime was outplayed in the opening set against Serbian Hamad Medjedovic but staged a comeback and secured a 3-6 6-1 6-4 win to reach the last four.
FAA flips it 🔁
— ATP Tour (@atptour) June 26, 2025
A 3–6 6–1 6–4 win over Medjedovic for @felixtennis to improve to 7–0 in QFs in 2025! 😤@MallorcaChamps | #MallorcaChampionships pic.twitter.com/UaBsjsOFDi
Spanish hopes were dashed as home favourite and seventh seed Roberto Bautista Agut fell 6-4 7-6(4) to Michelsen in a tight quarterfinal.
Locked in 🔒
— ATP Tour (@atptour) June 26, 2025
Alex Michelsen completes the Mallorca final four with a 6–4 7–6(4) victory over Bautista Agut!@MallorcaChamps | #MallorcaChampionships pic.twitter.com/6gol1GtPiR