Croatian Cilic, who lost last year's final to Roger Federer, underlined his credentials for another Grand Slam title bid to add to his U.S. Open triumph in 2014.
Rafa Nadal's return to form was stopped in its tracks when he lost his opening match at the Aegon Championships to Ukraine's Alexandr Dolgopolov 6-3, 6-7(6), 6-4 on Tuesday.
Croatian ninth seed Marin Cilic reached the Wimbledon quarter-finals for the third year running after Kei Nishikori quit with a rib injury midway through their fourth round match on Monday.
IMAGES from matches played at the Miami Masters in Key Biscayne, Florida
A summary of Day 2 at Wimbledon on Tuesday.
Images from Day 3 of the 2020 French Open at Roland Garros, in Paris, on Tuesday.
Summary of sports events and persons who made news on Wednesday
A summary of Monday's action at the US Open.
IMAGES from Day 5 of the Wimbledon Championships at All England Lawn Tennis and Croquet Club on Friday.
Top seed and defending champion Roger Federer advanced to the Wimbledon last 16 without dropping a set after a 6-3, 7-5, 6-2 win over German Jan-Lennard Struff on Friday.
Roger Federer began his 63rd consecutive Grand Slam tournament with a majestic 6-1, 6-3, 6-3 first-round win over little-known Bosnian Damir Dzumhur at Wimbledon in London, on Tuesday.
PHOTOS from day seven of the Wimbledon championships at the All England Lawn Tennis in London on Wednesday
A summary of sports events and persons who made news on Thursday
Nick Kyrgios clinched his maiden tour title on home soil in a big confidence boost ahead of the Australian Open, beating Ryan Harrison 6-4, 6-2 in the Brisbane International final.
The 32-year-old, five-times a winner of the singles at the prestigious Wimbledon warm-up event, delighted a large evening centre court crowd with some fluent shot-making as he and Spanish veteran Lopez beat top seeds Juan Sebastian Cabal and Robert Farah 7-6(5), 6-3.