At the time of the victory Wawrinka did not know if his win would be enough to put him into the last four, but Tomas Berdych's defeat at the hands of Rafa Nadal later in the day confirmed that the Swiss player would progress from group A.
The exhausted Ferrer, playing in his seventh straight week of tournament play, battled valiantly for a set and a half, even fighting back from 5-2 down to take the opening set.
But ultimately Wawrinka had too much for the world number three, and secured the win after just less than two and a half hours.
Wawrinka admitted after his match that he would be cheering Nadal on later in the day.
"For sure, I'm going to be a big fan of Rafa (tonight)," Wawrinka said on court. "I did my job all week. I did the best I can so now I'm just going to watch what is going to happen. I'll be really happy if Rafa wins."
- Sports & Recreation
- Rafa Nadal
- Tomas Berdych