Australian Open Round of 16 Begins

Sixteen women and sixteen men compete in Round 4 of the tennis singles matches in this year's Australian Open, which means 112 each in men's and singles tennis have been eliminated as at the end of Round 3 on January 19, Australian eastern daylight saving time.

No Australian players are competing in Round 4, which begins today, January 20, local time, with the losses suffered by women's No 9 seed Samantha Stosur in Round 2 and men's unseeded player Bernard Tomic in Round 3.

• Australian Open 2013
• The Lead-up Tournaments
• The Seeded Players and how they fared
• Rounds 1 to 4
• The Quarterfinals