Carlos Alcaraz chased his second ATP 500 title of the month in Doha. The Rotterdam champion passed two obstacles before falling to world no. 25 Jiri Lehecka 6-3, 3-6, 6-4 in two hours and nine minutes.

Jiri Lehecka knocked off top-seeded Spaniard Carlos Alcaraz on Thursday to advance to the semifinals of the Qatar ExxonMobil Open in Doha.

World No. 3 Alcaraz took on No. 25 Jiri Lehecka in the quarterfinals. Lehecka overpowered Alcaraz throughout the two-hour, nine-minute match, taking the win in three

World No. 3 Carlos Alcaraz found himself trailing in the second set to Croatia's Marin Cilic, but battled back for a 6-4, 6-4 win Monday in the opening round at the Qatar ExxonMobil Open in Doha.

The 21-year-old Spaniard let his guard down in the second set, when his Italian opponent fought back from trailing 1-4 to force a decider.