London - Big-serving Milos Raonic fired 37 aces and 74 winners to defeat Mackenzie McDonald of the United States and reach the Wimbledon quarter-finals for the fourth time on Monday.
The 27-year-old Canadian, who was runner-up to Andy Murray in 2016, triumphed 6-3, 6-4, 6-7 (5/7), 6-2.
The 13th seed won all 20 of his service games on Monday and will tackle either US ninth seed John Isner or Greek 31st seed Stefanos Tsitsipas for a place in the semi-finals.
Wimbledon results on Monday, the seventh day of the 2018 championships (x denotes seeded player):
Men
4th round
Roger Federer (SUI x1) bt Adrian Mannarino (FRA x22) 6-0, 7-5, 6-4
Milos Raonic (CAN x13) bt Mackenzie McDonald (USA) 6-3, 6-4, 6-7 (5/7), 6-2
Women
4th round
Dominika Cibulkova (SVK) bt Hsieh Su-Wei (TPE) 6-4, 6-1
Jelena Ostapenko (LAT x12) bt Aliaksandra Sasnovich (BLR) 7-6 (7/4), 6-0
Daria Kasatkina (RUS x14) bt Alison Van Uytvanck (BEL) 6-7 (6/8), 6-3, 6-2
Angelique Kerber (GER x11) bt Belinda Bencic (SUI) 6-3, 7-6 (7/5)
Kiki Bertens (NED x20) bt Karolina Pliskova (CZE x7) 6-3, 7-6 (7/1)
Julia Goerges (GER x13) bt Donna Vekic (CRO) 6-3, 6-2
Serena Williams (USA x25) bt Evgeniya Rodina (RUS) 6-2, 6-2
Camila Giorgi (ITA) bt Ekaterina Makarova (RUS) 6-3, 6-4
