Australian Open Day Two – No wonder Victoria Azarenka is smiling. She had a tough first-round opponent in Sloane Stephens but comfortably progressed in straight sets.
Australian Open Day Two – Azarenka entered the Australian Open under the radar after her ranking slipped last year. But she's a two-time champion at the year's first major.
Australian Open Day Two – Azarenka will next face her pal, Caroline Wozniacki, in one of the second-round matches of the tournament. Wozniacki, pictured here, ousted another American,Taylor Townsend.
Australian Open Day Two – Wozniacki is seeking a maiden major but her path in Melbourne appears to be very difficult.
Australian Open Day Two – Women's top-seed Serena Williams, pictured, started her tournament by toppling Belgium's Alison Van Uytvanck.
Australian Open Day Two – Serena's older sister, Venus, also progressed by overcoming Spain's Maria-Teresa Torro-Flor. Venus is bidding to reach a first grand slam quarterfinal in five years.
Australian Open Day Two – In the men's draw, Novak Djokovic -- going for a fifth Australian Open title -- got past Slovenia's Aljaz Bedene in straight sets.
Australian Open Day Two – Djokovic wasn't broken in the match, although he faced a pair of break points early.
Australian Open Day Two – Defending champion Stan Wawrinka, seen here, had an easier time than Djokovic, advancing past Turkey's Marsel Ilhan in 89 minutes.
Australian Open Day Two – Japan's Kei Nishikori walks off court after beating Spain's Nicolas Almagro. Nishikori has become even more popular, especially in Asia, after making the U.S. Open final.