Federer wins ATP 500 event in Rotterdam . Beats holder Andrea Petkovic in six -set final . It proved a day of firsts for Stan Wawrinka as he lifted his first indoor title and first at ATP Tour 500 level . Completes full set of tennis honors and tour-level titles . Rotterdam wins Diamond Games tournament .
Federer wins ATP 500 event in Rotterdam . Beats holder Andrea Petkovic in six -set final . Completes full set of tennis honors and tour-level titles . Rotterdam wins Diamond Games tournament .