Second seed Kevin Anderson has been knocked out of the Erste Bank Open in Vienna by Steve Johnson following a 7-5 6-7(5) 4-6 defeat in the quarter-finals.
The South African managed to find a crucial break point, the only one converted in the first set, to take the lead in Austria.
Johnson managed to save four break points in the second set, but Anderson was equally strong as he prevented his American opponent from snatching the set in normal play.
A tie-break was needed to separate the two, and it was Johnson who clinched it 7-5 before going a break up in the third set to snatch a 3-2 lead.
There was a halt in play as Anderson received medical treatment, and from that point on, the South African failed to rediscover form as Johnson took the set and the match.