The 2016 WTA Finals in Singapore have officially kicked off as the Singapore Indoor Stadium hosted the first day of round robin play on Sunday.
Before things got all serious for four of the eight best players of the season, the day started with a lighter note as Agnieszka Radwasnka, Garbine Muguruza, Karolina Pliskova & Bethanie Mattek-Sands participated in a fun-filled family day event with lots of laughs.
Afterwards, laughing time was over though, especially for Madison Keys.