Fritz defies Khachanov fightback and line-call blooper to reach Wimbledon last four

• Fritz into semi-finals after 6-3, 6-4, 1-6, 7-6 (4) win

• I've never really had a match just flip so quickly'

Taylor Fritz survived a midmatch dip, a bold fightback from his opponent and even another linecalling malfunction as he beat Karen Khachanov 6-3, 6-4, 1-6, 7-6 (4) on Tuesday to reach the semi-finals at Wimbledon for the first time.

The American coasted through the first two sets with some imperious serving, not facing a single break point, only to dip markedly in the third to allow Khachanov back into the match. However, after falling a break behind early in the fourth set, the No 5 seed rediscovered his focus and played a near flawless tie-break to advance to a clash with the defending champion, Carlos Alcaraz.