Unseeded Russian Karen Khachanov advances to US Open semifinals after hobbled No. 28 seed Alexander Blockx retires in third set
- Open: 517 events in the last 90 days
- Previous: earlier the same day · Hewett and Reid into last eight of US Open singles
What happened
Khachanov advances to face the winner of Wednesday’s prime-time match between No. 1 seed Alexander Zverev and unseeded Botic Van De Zandschulp.
Summary assembled by rule from the sources below