The Japanese star, now 29-8 in five-setters, was joined by Casper Ruud in coming through a decider Sunday in Melbourne.

In the Round of 128 at the Australian Open on Saturday, Kei Nishikori (ranked No. 74) takes on Thiago Monteiro (No. 106). In Nishikori’s most recent competition, he was defeated by Holger Vitus ...