Mirza Basic stuns Stan Wawrinka at Sofia Open, to play Marius Copil in final

Stan Wawrinka was beaten 7-6 (6), 6-4 by Mirza Basic -- ranked 129th in the world -- earning a place in his first ATP final against Marius Copil, who defeated Jozef Kovalik 6-4 6-2.

Stan Wawrinka missed out on the final of the Sofia Open as he suffered a stunning loss to Mirza Basic.

Mirza Basic beat Stan Wawrinka in straight sets at the Sofia Open on Saturday. (Getty Images)

The three-time grand slam champion was beaten 7-6 (6), 6-4 by Basic - ranked 129th in the world - the Bosnian earning a place in his first ATP final.

He will now take on Marius Copil, who defeated Jozef Kovalik 6-4 6-2.

“I think I played a very, very good match. I was serving very good, so I think this helped me a lot,” Basic said after his first win over a top-20 player. “It’s a big success for me. My first final after I played a semi-final last year.

“Also it’s a big achievement because it will be the first time, after this week, I’m going to be top 100 [in the ATP rankings] so it’s an even bigger success.”