Cape Town - Kevin Anderson is through to the quarter-finals at Wimbledon after beating Gael Monfils of France in a closely contested round of 16 encounter.
He won 7-6 (7/4), 7-6 (7/2), 5-7, 7-6 (7-4) in 3 hours and 33 minutes.
The big-serving South African will now face reigning Wimbledon champion, Roger Federer for a place in the semi-finals.
Anderson, who has never progressed further that the fourth round at the prestigious grass court championship, managed 20 aces in the match and a first serve percentage of 66%.
He won 82% of his first service points.
Anderson managed 52 winners to the 39 of Monfils while he made 44 unforced errors. Monfils made 29.
Federer easily defeated Adrian Mannarino, 6-0, 7-5, 6-4 in their round of 16 encounter.
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