Johanna Konta produced a display full of authority and confidence as she beat Donna Vekic in straight sets to reach her first French Open quarter-final. The victory lifts Konta into her first Grand Slam quarter-final since her semi-final run at Wimbledon two years ago. The match started frenetically, with two breaks on the Vekic serve and one on KontaвЂ™s in the opening three game, but the 28-year-old got a much-needed cushion at 5-2. The decisive break in the second came as she went 5-4 up with a wonderful drop shot and she suffered no similar problems in serving it out with Vekic sending a defensive lob long. вЂњOver the last few months IвЂ™ve been playing at a better and better level вЂ“ more than anything I feel like IвЂ™m building on each match that IвЂ™m playing and each day I get to spend out on court I feel like IвЂ™m adding to how I want to be playing," Konta told Eurosport after the match. "IвЂ™m really pleased to have made it this far and IвЂ™ll be working hard to get to the very end. вЂњA lot of the work IвЂ™m doing does translate to all surfaces but what clay requires is for you to play the game more than other surfaces because you have more time. With the things that we are doing thatвЂ™s a big part of it вЂ“ to give myself the space and the freedom to play out there – to create the points the way I want to, to trust what I do out there because IвЂ™ve got a lot of goods things to do and Dimitri has been really great in giving me the space to express myself out on court. вЂњI think IвЂ™m enjoying the game more now and seeing it for what it is. I think when you are younger itвЂ™s hard to disassociate yourself with it, and not be too emotional about It, more than anything. IвЂ™m definitely really grateful for what the game is.вЂќ Konta will face either Sloane Stephens or Garbine Muguruza in the last eight, with the 2016 champion set to face last year's beaten finalist later on Sunday.