Iga Swiatek reinforced herself as the world no.1 tennis player in the ATP Finals against Jessica Pegula. The Polish star hammered the American 6-1 6-0 in Cancun to overtake Aryna Sabalenka at the top of the world rankings.

The 22-year-old is the youngest WTA Finals champion since Petra Kvitova won in 2011 at the age of 21. The four-time Grand Slam Champion will be hoping for more major success next season at the Australian Open which starts in January.