Going into the London 2012 Olympics, Serena and Sharapova were the only players in the field who have achieved the legendary career Grand Slam (Serena achieved the feat back in 2002 with Sharapova completing the set in June). As such it seems only right that they're battling it out in the final with the winner achieving the career Golden Grand Slam.
Steffi Graf (who won all four slams and Olympic gold back in 1988) is the only other player to have managed this.
Serena will be strong favourite to win her first singles gold medal (she's won two doubles golds with her sister Venus) given her progress through the draw so far this week. The American has yet to concede more than three games in a set and she's destroyed Vera Zvonareva, Caroline Wozniacki and Victoria Azarenka in success. Given how good those players are (they've all reached Grand Slam finals), for Serena to beat them all dropping just 7 games across the three matches, is simply remarkable.
Sharapova will do well not to get obliterated and going by her head-to-head record against Serena, she faces an uphill task. Serena has won eight of their ten matches and has won the last seven in a row. However the run's got to end at some point and what better time than an Olympic final ?
Prediction: Serena in two.