<p class="title">Dominic Thiem qualified for the quarter-finals of the Madrid Open on Thursday after beating Australia's Alex de Minaur 7-6 (9/7), 6-4.</p>.<p class="bodytext">US Open champion Thiem, playing his first tournament since Dubai in March, will meet Andrey Rublev or John Isner in the last eight.</p>.<p class="bodytext">Thiem lost his serve in the opening game but recovered with a break for 3-all. He missed a set point in the tie-break and then saved one before clinching the first set at the second attempt.</p>.<p class="bodytext">The Austrian third seed withstood three break points early in the second set and then broke De Minaur the following game.</p>.<p class="bodytext">De Minaur, the world number 24, hit back to level at 3-all but promptly dropped serve the next game as Thiem secured victory in just under two hours.</p>.<p class="bodytext">Alexander Bublik of Kazakhstan also progressed to the quarter-finals with a 6-4, 6-3 win over in-form Russian Aslan Karatsev.</p>
<p class="title">Dominic Thiem qualified for the quarter-finals of the Madrid Open on Thursday after beating Australia's Alex de Minaur 7-6 (9/7), 6-4.</p>.<p class="bodytext">US Open champion Thiem, playing his first tournament since Dubai in March, will meet Andrey Rublev or John Isner in the last eight.</p>.<p class="bodytext">Thiem lost his serve in the opening game but recovered with a break for 3-all. He missed a set point in the tie-break and then saved one before clinching the first set at the second attempt.</p>.<p class="bodytext">The Austrian third seed withstood three break points early in the second set and then broke De Minaur the following game.</p>.<p class="bodytext">De Minaur, the world number 24, hit back to level at 3-all but promptly dropped serve the next game as Thiem secured victory in just under two hours.</p>.<p class="bodytext">Alexander Bublik of Kazakhstan also progressed to the quarter-finals with a 6-4, 6-3 win over in-form Russian Aslan Karatsev.</p>