Daniil Medvedev survives to win tight Australian Open five-set match, Stefanos Tsitsipas safely through

Men’s fourth seed Daniil Medvedev faced the prospect of a shock exit in the fourth round of the Australian Open, before prevailing in a gritty five-setter against Serbia’s Filip Krajinovic.

In contrast, fifth-seeded Greek Stefanos Tsitsipas encountered little trouble in his 6-4, 6-1, 6-1 win over Sweden’s Mikael Ymer.

Medvedev’s Russian countryman and seventh seed, Andrey Rublev, beat veteran Spaniard Feliciano Lopez in straight sets, 7-5, 6-2, 6-3.

Medvedev appeared headed for a comfortable victory when he won the opening two sets 6-3, 6-3.

But the match…