MELBOURNE, Australia — Filip Krajinovic was closing in on the fourth round when, in the fifth set of his match on Saturday against Daniil Medvedev at the Australian Open, he retreated as if zapped by an invisible electric fence.
Krajinovic had pushed the fourth-ranked Medvedev around the court at Rod Laver Arena while winning the third and fourth sets. But instead of his momentum carrying him into his first Grand Slam round of 16, Krajinovic won only 12 points in the decisive set as Medvedev prevailed 6-3, 6-3, 4-6, 3-6, 6-0.
Krajinovic hit the tennis equivalent of the Olympic marathoner’s 20-mile wall.