American tennis legend Serena Williams has announced her retirement from the game on Tuesday confirming that she is 'evolving away from tennis'. Williams had made her comeback at Wimbledon earlier this year where she lost against France's Harmony Tan in the first round. Williams was far from her best against Tan, who defeated her 7-5 1-6 7-6(7) in a gruelling encounter which lasted over three hours. The tennis great, however, hasn't yet given up on chasing a record-equalling 24th Grand Slam and will quit the sport after playing in the upcoming US Open. Here is a look at the 23 singles Grand Slam titles that Williams has won so far in her illustrious career.