German seventh seed Alexander Zverev recovered from a slow start to beat former champion Stan Wawrinka 1-6, 6-3, 6-4, 6-2 in the Australian Open and reach his first career Grand Slam semi-final. Zverev was once considered one of the leading ‘Next Gen’ contenders to break the Grand Slam hegemony of Novak Djokovic, Rafael Nadal and Roger Federer, who have shared the last 12 majors between them. But the German, who beat Federer and Djokovic on his way to the 2018 ATP Finals title, fell off the radar as he failed to get past the quarter-finals at the majors. “It feels awesome, I don’t know what to say,” said Zverev.