Serena Williams will definitely end 2013 as world number one after an impressive calendar year which has seen her win two Grand Slams to bring her career tally to 17.
The 32-year old won only her second French Open at Roland Garros earlier in the season and then followed that up with a success in her home slam, the US Open.
Along with the two majors, Williams has also secured seven other titles on the tour and has only actually lost on four occasions.
Despite her dominance over the past couple of decades, it will be just the third time she has ended the year at the top of the rankings.
Williams, a perennial favourite in the tennis betting with bet365
, regained the number one spot back in February when she overtook Victoria Azarenka.
She will be taking part in the WTA Championship in Istanbul next month where she will start the tournament as the favourite
with people who bet on tennis to win yet another crown. That is the final event of the season where she will be presented with a trophy to acknowledge her position at the top of the standings.
After losing in the quarter-final of the Australian Open back in January, it looked as though the women’s game was going to be wide open in 2013. However, she soon bounced back in the very next Grand Slam where she defeated Maria Sharapova on the clay in France 6-4 6-4.
At Wimbledon there was a surprise fourth-round exit to Sabine Lisicki, despite the grass surface in London being one one of her favourite venues.
Her fifth career US Open came at Flushing Meadows, 14 years after her first. She did drop the second set against Azarenka in the final but bounced back to complete a 2-1 victory after securing the third set 6-1.