Top-seeded Andy Murray is out of the Australian Open, losing to 50th-ranked Mischa Zverev in the 4th roundBy APPublishedJan. 22, 2017 2:49 a.m. ETMELBOURNE, Australia (AP) Top-seeded Andy Murray is out of the Australian Open, losing to 50th-ranked Mischa Zverev in the 4th round.