Fritz survives Khachanov fightback and line-call blooper to book place in semis

Fritz into last four after 6-3, 6-4, 1-6, 7-6 (4) victory‘I’ve never really had a match just flip so quickly’Taylor Fritz survived a mid-match dip, a bold fightback from his opponent and even another line-calling malfunction as he beat Karen Khachanov of Russia 6-3, 6-4, 1-6, 7-6 (4) on Monday 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