Wawrinka shocked by Medvedev, Murray and Nadal through to second round at Wimbledon

Switzerland's Stan Wawrinka reacts after losing his first round match against Russia's Daniil Medvedev in the Wimbledon Championships in London, Britain on July 3, 2017. [Photo/Agencies]

LONDON -- Fifth seed Stan Wawrinka suffered a shock defeat to Daniil Medvedev of Russia 6-4, 3-6, 6-4, 6-1 in the opening day's competition of the Wimbledon Championships on Monday.

Fourth seed Rafael Nadal beat the world No 137 John Millmain of Australia in a lopsided 6-1, 6-3, 6-2 match while Andy Murray begun the defence of his title with a 6-1, 6-4, 6-2 win over world No 134 Alexander Bublik.

The 32-year-old Wawrinka, a three-time Grand Slam champion, needed ice on a knee injury between points as he became the biggest name to fall. World number 20 Nick Kyrgios was the other seeded player failing to reach round two, retiring because of a hip injury.

It was Medvedv's first Grand Slam victory on his Wimbledon debut, and he dropped to his knees and kissed the green stuff.

"At 5-1, already I started thinking what I have to do after the match if I win it," the 21-year-old Medvedev said. "And I did it because it's my first Grand Slam win, it's at Wimbledon - my favourite tournament - I had to kiss the grass, I guess. Even though people do it when they win the slam, I did it when I win my first match at a slam."

"I had a really great grass court season," he said. "I knew that Stan had some problems at Queen's, he had only played on match on grass. I knew that I would have the chance if I played good and third and first set, I think I was playing amazing."