Paris, June 3 -- Britain's Jack Draper said it feels like a "missed opportunity" to reach the French Open quarter-finals after a surprise defeat by world number 62 Alexander Bublik.

The 23-year-old was given a reality check as Bublik, the second-lowest ranked player left in the draw, claimed an inspired 5-7 6-3 6-2 6-4 win on Monday.

World number five Draper lost his way as the maverick Kazakh produced one of the finest displays of his career.

"It's a really tough loss to take," said Draper, who had never won a French Open match before this year.

"Even though I've come up quickly this year and got myself to a high ranking, it's been a steep learning curve for me.

"I had an opportunity today and I missed my opportunity."

The British nu...