Defending champion beat unseeded Belgian 6-3, 6-4 to capture a third successive title in the German city
The world number three defeated American compatriot Vickery in three sets
The 22-time Grand Slam winner has faced the Barcelona Open defeat on his post-injury return
37-year-old beats Cobolli 6-2, 6-3 in the first match since January
37-year-old has not played an ATP tournament since January due to a muscle issue
Briton seals 3-1 win with 6-4, 1-6, 7-6 (1) victory over Diane Parry
Spaniard will play 63rd-ranked Flavio Cobolli in his opening match next week
Four-time major champion beat Yulia Putintseva 6-2, 7-6 (7/5) to give her side an early 2-0 lead over Kazakhstan
Khachanov, Sinner, and Djokovic advance to quarter-finals
30-year-old overcomes Russia's Kasatkina 6-2, 6-1 to secure second consecutive title