Pakistan, June 20 -- British second seed Jack Draper survived a scare to reach the Queen's Club quarterfinals with a gritty 3-6, 6-2, 7-6 (7/5) win over Australia's Alexei Popyrin on Wednesday.

Draper was rocked by the world No. 21 in the first set of the second-round tie at the Wimbledon warm-up event.

But the 23-year-old hit back to level the match before taking the final set tie-break to complete his comeback in a tense encounter lasting two hours and 13 minutes in searing heat in west London.

Earlier in his career, such a test of endurance would have been too much for Draper, but he believes he is made of sterner stuff these days.

"Before I felt like my energy wasn't that strong, and I felt like I looked like a bit of a Ferrari bu...