Maria Sharapova retirement: Looking back at Sharapova's 5 Grand Slam wins 

US Open - 2006

Maria Sharapova won her second Grand Slam in 2006

After winning Wimbledon in 2004, the Russian failed to win a single Slam in 2005. In 2006 it seemed like she would end another year without a Major to her name, but Sharapova defied the expectations at Flushing Meadows to win the US Open.

Holding the third seed in the competition, Sharapova overcame the likes of Li Na and Elena Likhovtseva to reach the quarterfinals. She dispatched 27th seed Tatiana Golovin in the final eight but in the semifinals a tough test awaited her - number one seed Amelie Mauresmo.

Much to the surprise of everyone, Sharapova blanked Mauresmo in the first and third sets to win the match 6-0, 4-6, 6-0. She then beat the second seed Justine Henin in straight sets to lift the trophy.

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Australian Open - 2008

Maria Sharapova bagged her Grand Slam Down Under

Sharapova entered the 2008 Australian Open as the fifth seed. She battered World No. 1 Justine Henin once again, but this time in the quarterfinals. Sharapova beat her 6-4, 6-0 to progress to the semis.

In the final four, she met third seed Jelena Jankovic. The Serb proved to be no match for Sharapova as the 2006 US Open winner won the match 6-3, 6-1.

The Russian continued her golden run in the final to overcome a tough challenge from Ana Ivanovic and win her first Australian Open title.