Carlos Alcaraz insists he must "keep learning" on grass, despite continuing his impressive surface record by progressing to the semi-finals at Queen's Club.

The world number two took an hour and 22 minutes to wrap up a 7-5 6-4 victory over lucky loser Arthur Rinderknech in the last eight on Friday.

That extended Alcaraz's winning streak to 16 matches, a run during which he has triumphed at the Italian Open and French Open.

The two-time Wimbledon champion – and 2023 Queen's Club winner – also continued his impressive record on grass, having now won 27 of his first 30 tour-level matches on surface.

"Ultimately, it's a surface we don't play many matches on each year, and you have to learn from every experience on it, from every match you play," he said.

"Every player is different, with a different style, especially on grass. So, you have to keep learning and getting to know yourself; what suits you and what doesn't.

"That's what we're doing. We're growing, we're getting to know ourselves and, above all, you have to keep learning, even when the numbers are in your favour. You have to keep learning in every situation possible."

Our 2025 semi-final line-up is complete#HSBCChampionships pic.twitter.com/EznRAjZ4Pg

— HSBC Championships (@QueensTennis) June 20, 2025

While Alcaraz is going well in London, world number one Jannik Sinner suffered a shock defeat against Alexander Bublik in Halle on Thursday.

Nevertheless, the Spaniard is adamant that defeat will have no bearing on the Italian's performance at Wimbledon, which begins on June 30, pointing to his own personal experience as an example.

"Honestly, not at all," he said when asked if Sinner should be worried ahead of the grass-court major. "Last year, I lost in the second round [at Queen's Club] and then Wimbledon went very well [lifting his second trophy].

"Whether or not you do well at the previous tournament, it doesn't mean you'll do better or worse later. You always have to be positive. Right now, he'll have time to rest, to practise, to prepare well for Wimbledon.

"In my case, the more matches I play, the more feeling of competition I'll have in my body for Wimbledon. Above all, I'll have more feedback for Wimbledon on what I need to improve."