Olympic champion Alexander Zverev was eliminated from the Australian Open after being defeated by Michael Mmoh of the United States in the second round match on Thursday. Mmoh claimed a 6-7 (1-7), 6-4, 6-3, 6-2 win and, for the first time since his debut in 2016, Zverev didn’t make it to the third round of the Australian Open. The German, however, was far from his top form, as the event in Melbourne marked his return to a major competition some seven months after suffering a serious ankle injury. It’s also the first time Zverev has lost at a Grand Slam to a lucky loser – a competitor who loses…