Roger Federer eased closer to a ninth title at the Halle grass court tournament when he demolished defending champion Florian Mayer of Germany 6-3, 6-4 in the quarter-finals.
The world number five, building up to an assault on an eighth Wimbledon title in July, will next face Karen Khachanov, who defeated fellow Russian Andrey Rublev 7-6 (10/8), 4-6, 6-3 in his last-eight clash.
BY AFP

