No. 1 Rafael Nadal of Spain needed just 102 minutes to bounce American Ryan Sweeting from the 2011 Australian Open, dominating his way to a 6-2, 6-1, 6-1 win.

American Ryan Sweeting's first Australian Open appearance ended in the second round with a straight-set defeat against No. 1 Rafael Nadal of Spain. Sweeting hit 14 winners to 28 unforced errors in the match, while Nadal had 36 winners to 25 unforced errors.

Converting five of 10 break point chances while being broken just once herself, No. 3 Kim Clijsters of Belgium earned a 6-1, 6-3 victory in Day 4 action against Spain's Carla Suarez Navarro.

No. 5 Samantha Stosur of Australia won 28 of 40 points on her first serve and 11 of 17 on her second serve in a 6-3, 6-2 Day 4 victory over Russia's Vera Dushevina in Melbourne.

No. 5 Andy Murray of Great Britain hit 31 winners to 15 unforced errors in a Day 4 win over the Ukraine's Illya Marchenko that was more competitive than the 6-1, 6-3, 6-3 score would seem to indicate.

No. 21 Marcos Baghdatis of Cyprus hit 46 winners to 29 unforced errors in a 6-1, 6-3, 4-6, 6-3 victory over Argentina's Juan Martin Del Potro on Jan. 20, 2011.

Argentina's Juan Martin Del Potro battled wrist pain in his second-round defeat against Cyprus' Marcos Baghdatis, the No. 21 seed. Del Potro finished the four-set loss with 34 winners to 41 unforced errors.

Hitting 42 winners, including 20 aces, to 39 unforced errors helped No. 20 John Isner of the United States rally from a set down to beat Radek Stepanek of the Czech Republic, 4-6, 6-4, 6-2, 6-1 on Jan. 20, 2011 in Melbourne.

Hitting the same number of winners as No. 7 Jelena Jankovic in the second round (28), China's Peng Shuai hit 19 fewer unforced errors (20 to 39) and picked up a 7-6 (3), 6-3 victory.

Despite being up a break in the first set, No. 7 Jelena Jankovic of Serbia couldn't hold on to that edge and ultimately lost to China's Peng Shuai in straight sets, 7-6 (3), 6-3, on Jan. 20, 2011. The second-round exit was Jankovic's earliest at the Australian Open since 2006.

No. 4 Robin Soderling of Sweden never faced a break point on his serve, winning 42 of 45 first-serve points and 22 of 33 second-serve points in a 6-3, 7-6 (1), 6-1 victory over Gilles Muller of Luxembourg on Day 4 of the 2011 Australian Open.

After losing in the second round at the Australian Open each of the two previous years, Australia's Bernard Tomic earned his first trip to the third round with a 7-6 (4), 7-6 (3), 6-3 upset of No. 31 Feliciano Lopez of Spain.

No. 13 Jo-Wilfried Tsonga of France had reason to celebrate after winning his second-round match against Italy's Andreas Seppi by a 6-3, 7-6 (1), 7-6 (5) score.

In a three-set match that lasted two and a half hours, Italy's Andreas Seppi won a total of 102 points and lost 115 against second-round winner No. 13 Jo-Wilfried Tsonga of France.

No. 7 David Ferrer of Spain won 90 points while allowing second-round opponent American Michael Russell to win just 55. Ferrer earned a 6-0, 6-1, 7-5 victory on Jan. 20, 2011.

American Michael Russell matched his career-best performance at the Australian Open by making it to the second round in 2011, but that was where his tournament run ended. Russell hit 18 winners to 35 unforced errors in a straight-set defeat against No. 7 David Ferrer of Spain.

Playing on one of the outer courts on Day 4, Alexandr Dolgopolov of the Ukraine (back) won 43 of 50 points on his first serve and 31 of 43 points on his second serve in a 6-3, 6-0, 3-6, 7-6 (3) victory over Germany's Benjamin Becker (front).

After dropping the first set to Serbia's Bojana Jovanovski, No. 2 Vera Zvonareva of Russia rallied in Melbourne to claim a 2-6, 6-3, 6-1 victory.

No. 31 Lucie Safarova of the Czech Republic had 18 break point chances against compatriot Klara Zakopalova on Day 4 and converted 10 of them. Despite being broken eight times herself, Safarova moved into the third round with a 6-3, 6-7 (2), 7-5 victory.

No. 27 David Nalbandian of Argentina survived a tough five-set thriller at the 2011 Australian Open but wasn't even able to play his second-round match to completion, bowing out while trailing 6-1, 6-0, 2-0 against Lithuania's Richard Berankis on Jan. 20, 2011.

After reaching the second round in each of his first two major tournament appearances (at Wimbledon and the U.S. Open in 2010), Lithuania's Richard Berankis improved on those performance by making it into the third round at the 2011 Australian Open. He advanced on Jan. 20, 2011 after No. 27 David Nalbandian of Argentina retired with Berankis leading 6-1, 6-0, 2-0.

No. 13 Nadia Petrova of Russia used 18 winners, including seven aces, to capture a 6-4, 6-1 victory over Australia's Alicia Molik on Jan. 20, 2011.

No. 11 Jurgen Melzer of Austria needed just 103 minutes to advance to the third round of the 2011 Australian Open with a 6-2, 6-4, 6-2 victory over Spain's Pere Riba.

No. 18 Maria Kirilenko of Russia won just 42 points while her second-round opponent Iveta Benesova of the Czech Republic won 64 and the match, 6-3, 6-1.

Iveta Benesova of the Czech Republic earned a straight-set win on Jan. 20, 2011, hitting 24 winners to 16 unforced errors and converting five break point chances against No. 18 Maria Kirilenko of Russia.

No. 12 Agnieszka Radwanska of Poland hit fewer winners than second-round opponent Petra Martic of Croatia (14 to 30), but she also hit fewer unforced errors (17 to 37) in a 6-3, 6-4 victory.

Hitting 76 winners to 47 unforced errors, No. 10 Mikhail Youzhny of Russia powered his way past Slovenia's Blaz Kavcic in five sets, 6-3, 6-1, 5-7, 4-6, 6-1. Kavcic hit 35 winners to 40 unforced errors in the match.

Hitting 23 winners to 16 unforced errors helped France's Alize Cornet pick up a Day 4 upset of No. 26 Maria Jose Martinez Sanchez of Spain, 7-5, 6-1.

While she herself was broken three times, Japan's Ayumi Morita saved six break points and converted five of nine to beat France's Carolina Garcia 6-4, 6-4 on Jan. 20, 2011.

No. 30 Thomaz Bellucci of Brazil won 192 points in Day 4 action, but his opponent, Jan Hernych of the Czech Republic, won 207 and the match, 6-2, 6-7 (11), 6-4, 6-7 (3), 8-6. The two battled on the court for four hours and 36 minutes.