Roger Federer defeated Thiemo De Bakker 6-3 6-2 6-4 in the SUI vs NED round robin on hard. The result followed the form book — Roger Federer came in leading the head-to-head 3–0. Roger Federer extended the head-to-head to 4–0.
Federer R. took it in straight sets.
Hard: Federer R. leads 3–0 · Clay: Federer R. leads 1–0
Roger Federer beat Thiemo De Bakker 6-3 6-2 6-4. Umpiry, "Roger Federer vs Thiemo De Bakker — SUI vs NED Round Robin", https://umpiry.com/match/2015-09-18/bakker-vs-federer-sui-vs-ned-rr?utm_source=cite (as of 18 September 2015).