The brief interruption did little to derail Bencic's upset bid against the top seed, eventually winning in three sets.

The former world No. 4 came back from a set down to defeat the defending champion and reach her first final since returning from maternity leave last fall.

But in Adelaide, after a 6-2, 1-0 (ret.) victory over world No. 14 Anna Kalinskaya, Belinda Bencic is at a loss. “I didn’t even think I’d be here,” Bencic, 27 and the world No. 421 ...