Pakistan, July 8 -- Jannik Sinner moved a step closer to defending his Wimbledon title with a composed victory over Jan-Lennard Struff to reach the semi-finals.

The world number one has yet to hit his best form at the Championships but acted decisively in key moments to secure a 7-5 7-6 (7-4) 6-3 win over Germany's 74th-ranked Struff. The Italian also showed no signs of being affected by the 30C temperatures, following his struggles with the heat in his shock second-round exit at this year's French Open.

Asked about struggling in the scorching conditions at Roland Garros, Sinner dryly responded: "Thanks for reminding me! "We worked a lot after Paris trying to understand what went wrong and prepared in the best possible way.

"It was a h...