Jannik Sinner's quarterfinal at the ATP 500 tournament in Halle, Germany, ends at the beginning of the second set.
After losing the first 7-5 against the Kazakh Alexander Bublik, the South Tyrolean withdrew due to a problem in his left leg (which had already been treated during the first set), when Bublik was leading 2-0.
The Kazakh thus reaches the semifinal.
His conditions are to be evaluated in view of Wimbledon, which starts on July 3rd.