Federer sweeps aside De Bakker to make last eight

In other matches, sixth seed Denis Istomin of Uzbekistan topped Germany’s Benjamin Becker 6-3, 6-7 (5/7), 6-2; Belgium’s Xavier Malisse, seeded eighth, squeezed past Australia’s Matthew Ebden 5-7, 7-5, 7-6 (7/1); and Steve Johnson of the US reached his first career quarter-final with a 6-3, 6-3 victory over qualifier Tim Smyczek.