2021 AO - Day 4 Men’s Singles

Day Four of the first Grand Slam tournament of 2021.

2021 Australian Open - a Grand Slam tournament, on Hard, in Melbourne, Australia, 8-21 February 2021.

Defending champion:

Novak Djokovic (2) who defeated Dominic Thiem (5) 6-4 4-6 2-6 6-3 6-4

Men’s second round singles results:

Andrey Rublev (7) defeated Thiago Monteiro 6-4 6-4 7-6(10-8)

Feliciano Lopez defeated Lorenzo Sonego (31) 5-7 3-6 6-3 7-5 6-4

Casper Ruud (24) defeated Tommy Paul 3-6 6-2 6-4 7-5

Radu Albot defeated wildcard Christopher O’Connell 6-2 7-5 7-6(8)

Lloyd Harris defeated wildcard Alexei Popyrin 6-2 1-6 6-3 6-7(5) 6-3

Mackenzie McDonald defeated Borna Coric (22) 6-4 6-2 4-6 6-4

Filip Krajinovic (28) defeated Pablo Andujar 6-2 5-7 6-1 6-4

Daniil Medvedev (4) defeated Roberto Carballes Baena 6-2 7-5 6-1

Stefanos Tsitsipas (5) defeated wildcard Thanasi Kokkinakis 6-7(5) 6-4 6-1 6-7(5) 6-4

Mikael Ymer defeated qualifier Carlos Alacaraz 2-6 6-4 6-4 7-6(5)

Karen Khachanov (19) defeated Ricardas Berankis 6-2 6-4 6-4

Matteo Berrettini (9) defeated qualifier Tomas Machac 6-3 6-2 4-6 6-3

Fabio Fognini (16) defeated Salvatore Caruso 4-6 6-2 2-6 6-3 7-6(14-12)

Alex de Minaur (21) defeated Pablo Cuevas 6-3 6-3 7-5

Cameron Norrie defeated qualifier Roman Safiullin 3-6 7-5 6-3 7-6(3)

Rafael Nadal (2) defeated qualifier Michael Mmoh 6-1 6-4 6-2