MELBOURNE, Australia—Maybe, just maybe, the thinking went, Novak Djokovic would be just a tad more susceptible to trouble this time around at the Australian Open.
After all, he wrenched his midsection during a slip in the third round and said he’d torn a muscle. Entering Sunday, Djokovic already ceded five sets in the tournament, the most he ever dropped en route to a major final. And he was facing Daniil Medvedev, owner of a 20-match winning streak.
