Top seed Carlos Alcaraz overcame Croatia's Marin Cilic to reach the round of 16 at the Qatar Open.
Top seed Taylor Fritz of the United States was beaten by Spanish eighth seed Alejandro Davidovich Fokina in the quarter-finals.
The Dutchman collapsed on the court after converting his sixth match-point to end an absorbing three hour, seven minute affair under sunny skies on Stadium One court.
Davis Cup heavyweights Australia and the United States eased through the first qualifying round on Saturday but Britain were knocked out as Japan hit back from 2-1 down to win 3-2, while Denmark staged a dramatic comeback to overcome Serbia.
IMAGES from Day 4 of the Wimbledon Championships, at the All England Lawn Tennis and Croquet Club, London, on Thursday.
Images from Day 1 of the 2024 Australian Open in Melbourne on Sunday.
The Italian is the youngest winner on the men's tour since Japan's Kei Nishikori won the Delray Beach Open at the age of 18 in 2008.
World No 8 Muchova withdraws from Aus Open with wrist injury
Brady was sidelined by knee and foot injuries since the summer of 2021
Images from Day 3 of the 2023 French Open at Roland Garros in Paris on Tuesday.