Top seed Carlos Alcaraz suffered an upset defeat in the quarterfinals of the Qatar Open on Thursday, as Jiri Lehecka shocked the title favourite with a three-set win.
Alcaraz struggled initially, losing the opening set before drawing level. Despite down a break in the final set, Lehecka, ranked 25th globally, mounted a remarkable comeback, claiming the last four games to secure a 6-3, 3-6, 6-4 victory.
