Machac came into this quarter-final contest with confidence having been deadlocked with Alcaraz at one-set all in last month’s Davis Cup, only to have to retire because of cramps. “I knew that I had a chance (to win), but you never know, even with a set and 5-4 it’s still so far from winning the match,” Machac added.

Tomas Machac produced a dramatic 7-6, 7-5 upset to end second-ranked Carlos Alcaraz's 12-match winning streak in the Shanghai Masters quarterfinals.

Tomas Machac will compete in his first Masters 1000 semi-final in Shanghai! World no. 33 stunned world no. 2 and the Beijing Open champion Carlos Alcaraz 7-6, 7-5, delivering his third top-10 victory and setting the semi-final clash against world no.