The Australian Open 2013 has reached its quarterfinals stage and some of the sports best will be in action on Tuesday beginning at 7 p.m. ET/11 a.m. EDT. 

Check out the stars taking the court Tuesday morning and afternoon in Australia. Yes, Novak Djokovic and Maria Sharapova are in action today.

Let's start with the best.

Novak Djokovic vs. Tomas Berdych 
This matchup takes off at 7 p.m. EDT/3 a.m. ET. Berdych will hope that Djokovic doesn't rip his shirt in sheer joy after this matchup, but he has a tough task ahead of him as he takes on Men's Singles No. 1 player. Djokovic will attempt to go for his third consecutive Australian Open. Can anybody really stop him? 

Maria Sharapova vs. Ekaterina Makarova 
The nation might be at a split as they will see two of their best Women's Singles players take center stage at the Australian Open quarterfinals. Sharapova has absolutely breezed through the competition losing a total of just five games in four matches. Makarova has defeated some stiff competition to get where she is right now. Marion Bartoli and Angelique Kerber fell victim to the 24-year-old.

The action begins a little after 3:30 p.m. EDT/11:30 p.m. ET.

David Ferrer vs. Nicolas Almagro 
Spain could be another country divided as two of their best take the spotlight at Rod Laver Arena at around 12:30 p.m. EDT/8:30 p.m. ET. Ferrer is the No. 4 best in Male Singles, while Almagro is sitting at 10th in the rankings. 

Na Li vs. Agnieszka Radwanska 
Starting the action off will be China's Li versus Polish start Radwanska. The two are ranked sixth and fourth respectively in the tournaments' Women's Singles. They set off the party at 11 a.m. EDT/7 p.m. ET.