Executive chairman since June 2005, de Villiers has overseen the most extensive set of changes to the ATP since its inception in 1990.

The changes, which will see $1 billion of new investment into the ATP, include record-breakinglevelsof prizemoney for players, new, world-class tournaments, an enhanced, healthier calendar structure, unprecedented levels of promotional spending and a new brand look and identity designed to make the tour more fan-friendly.

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New Haven, Connecticut

Total Prize Money: $708,000

Fernando Verdasco (1) leads Mischa Zverev, 6-2 Igor Andreev (4) vs. Marin Cilic (6) Luka Gregorc leads Andreas Seppi (7), 3-2 Mardy Fish (8) vs. Jesse Levine

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New Haven, Connecticut

Total Prize Money: $600,000

Anna Chakvetadze (1) vs. Sorana Cirstea, not before 1:00 PM ET Daniela Hantuchova (2) vs. Alize Cornet (7), not before 1:00 PM ET Marion Bartoli (3) vs. Caroline Wozniacki Agnes Szavay (4) vs. Amelie Mauresmo

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Forest Hills, New York

Total Prize Money: $74,800

Iveta Benesova (3) vs. Ekaterina Makarova Carla Suarez Navarro (4) vs. Martina Muller Shuai Peng vs. Vera Dushevina Lucie Safarova vs. Jamea Jackson

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Verdasco leveled Czech Ivo Minar 6-3, 6-1, while the 6-foot-10 Karlovic was upended by Slovenian qualifier Luka Gregorc 7-6 (7-4), 4-6, 6-2 on the hardcourts at the Connecticut Tennis Center.

Up next for Verdasco will be German Mischa Zverev in the quarterfinals.

Chakvetadze got past Aussie Casey Dellacqua 6-4, 6-4, while second-seeded Hantuchova battled back to force a third-set tiebreaker before knocking off unseeded Belarussian Olga Govortsova 3-6, 6-2, 7-6 (7-4).

The unseeded Mauresmo upended fifth-seeded Swiss Patty Schnyder 6-4, 3-6, 7-6 (8-6) at the Connecticut Tennis Center.

The former world No. 1 and two-time Grand Slam titlist was the 2001 U.S. Open champ and runner-up in 2004.

"Surgery was always the last resort, but unfortunately that's what it came down to," Hewitt said.

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New Haven, Connecticut

Total Prize Money: $708,000

Fernando Verdasco (1) vs. Ivo Minar Ivo Karlovic (2) vs. Luka Gregorc Igor Andreev (4) leads Victor Hanescu (16), 6-4 Marin Cilic (6) vs. Jurgen Melzer (11) Andreas Seppi (7) def. Fabio Fognini, 6-4, 6-2 Mardy Fish (8) vs. Marc Gicquel (9) Robby Ginepri vs. Mischa Zverev Jesse Levine vs. Steve Darcis

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Forest Hills, New York

Total Prize Money: $74,800

Pauline Parmentier (1) vs. Shuai Peng Marina Erakovic (2) vs. Jamea Jackson, 10:00 AM ET Carla Suarez Navarro (4) vs. Timea Bacsinszky Akgul Amanmuradova vs. Lucie Safarova

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New Haven, Connecticut

Total Prize Money: $600,000

Anna Chakvetadze (1) def. Casey Dellacqua, 6-4, 6-4 Daniela Hantuchova (2) vs. Olga Govortsova Patty Schnyder (5) vs. Amelie Mauresmo, 4-4 Sorana Cirstea leads Flavia Pennetta (6), 1-0 Alize Cornet (7) vs. Katarina Srebotnik Caroline Wozniacki def. Monica Niculescu, 6-3, 6-3

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The 2007 Wimbledon runner-up Bartoli came from behind to beat Bulgarian Tsvetana Pironkova 2-6, 6-4, 7-5 in second-round action.

Szavay, meanwhile, staved off a late rally to beat Italian Sara Errani 6-4, 6-7 (3-7), 6-4 in a second-round match.

Andreev erased Belgian Olivier Rochus 6-3, 6-4 on the hardcourts at the Connecticut Tennis Center.

Fish, who was last year's New Haven runner-up to fellow American James Blake, bounced back from a second-set loss to compatriot Wayne Odesnik to take a 6-1, 4-6, 6-1 victory.

There are 10 Grand Slam champions among the seeded players, including the likes of Nadal, Ivanovic, Swiss Roger Federer, Americans Venus and Serena Williams and Andy Roddick, and Serbian Novak Djokovic. Federer held the men's world No. 1 ranking for 237 consecutive weeks before being supplanted by Nadal this week.

Nadal had been No. 2 for a record 160 straight weeks.

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New Haven, Connecticut

Total Prize Money: $708,000

Ivo Karlovic (2) vs. John Isner Igor Andreev (4) vs. Olivier Rochus Juan Monaco (5) vs. Mischa Zverev Marin Cilic (6) vs. Viktor Troicki Andreas Seppi (7) def. Potito Starace, 4-6, 6-4, 6-4 Mardy Fish (8) vs. Wayne Odesnik Marc Gicquel (9) def. Albert Montanes, 7-5, 6-3 Fabio Fognini leads Simone Bolelli (10), 6-2, 3-4 Jurgen Melzer (11) vs. Arnaud Clement, 6-6 Robby Ginepri def. Agustin Calleri (12), 6-2, 4-6, 6-2 Steve Darcis def. Marcel Granollers (13), 6-2, 6-2 Jose Acasuso (14) vs. Luka Gregorc Eduardo Schwank (15) vs. Ivo Minar Victor Hanescu (16) def. Denis Gremelmayr, 6-7 (5-7), 7-6 (7-3), 6-2 Jesse Levine leads Guillermo Garcia-Lopez, 6-0

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New Haven, Connecticut

Total Prize Money: $600,000

Flavia Pennetta (6) def. Gisela Dulko, 6-3, 6-1 Amelie Mauresmo leads Kaia Kanepi, 6-2, 6-6 Monica Niculescu def. Maria Kirilenko, 6-7 (7-9), 6-2, 6-1

Marion Bartoli (3) vs. Tsvetana Pironkova Agnes Szavay (4) vs. Sara Errani

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Forest Hills, New York

Total Prize Money: $74,800

Iveta Benesova (3) vs. Elena Vesnina Vera Dushevina def. Sofia Arvidsson, 6-2, 6-2 Martina Muller def. Petra Cetkovska, 6-2, 6-3 Ekaterina Makarova vs. Gail Brodsky

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The fifth-seeded Schnyder snuck past American wild card Jill Craybas 6-4, 7-6 (7-2) on the hardcourts at the Connecticut Tennis Center.

Also, seventh-seeded Frenchwoman Alize Cornet gained the second round after she outlasted Czech Nicole Vaidisova in a late two-set dandy, 6-3, 7-6 (10-8).

Petersburg, FL (Sports Network) - Just one week after losing her top ranking to fellow Serb Jelena Jankovic, Ana Ivanovic has returned to No. 1.

Ivanovic is assured of being No. 1 for at least the next two weeks, which would mark her 10th and 11th weeks at the top. The French Open champ was No. 1 for nine weeks before being supplanted by Jankovic last week. Jankovic became the 18th woman to reach No. 1, despite having never even reached a Grand Slam final.

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New Haven, Connecticut

Total Prize Money: $708,000

Dudi Sela def. Donald Young, 6-4, 6-2 Ivo Minar def. Nicolas Mahut, 5-7, 6-3, 6-3 Mischa Zverev def. Florent Serra, 6-2, 7-6 (8-6) Albert Montanes def. Nicolas Devilder, 7-6 (7-5), 7-5

Notes

led here in 2005.

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Washington, D.C.

Total Prize Money: $508,000

Juan Martin del Potro (2) def. Viktor Troicki, 6-3, 6-3

Juan Martin del Potro (2) def. Tommy Haas (4), 6-2, 6-1 Viktor Troicki def. Igor Kunitsyn, 6-4, 6-2

Viktor Troicki def. Andy Roddick (1), 0-6, 6-2, 6-4 Juan Martin del Potro (2) def. John Isner, 6-4, 6-4 Tommy Haas (4) def. Alejandro Falla, 7-5, 6-1 Igor Kunitsyn def. Somdev Devvarman, 6-4, 6-1

Andy Roddick (1) def. Eduardo Schwank, 4-6, 6-4, 7-6 (7-2) Juan Martin del Potro (2) def. Dudi Sela, 6-0, 5-7, 6-2 Tommy Haas (4) def. Nicolas Mahut, 7-6 (7-4), 6-3 John Isner def. Donald Young, 6-4, 7-6 (7-4) Viktor Troicki def. Bobby Reynolds, 6-4, 1-6, 6-4 Somdev Devvarman def. Robert Kendrick, 6-2, 6-7 (5-7), 7-5 Igor Kunitsyn def. Fabio Fognini, 2-6, 6-2, 7-6 (8-6) Alejandro Falla def. Florent Serra, 7-6 (7-2), 7-6 (13-11)

 

Continue

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Beijing, China

Total Prize Money: $

Elena Dementieva (5) def. Vera Zvonareva (9), 6-3, 7-6 (7-3) Dinara Safina (6) def. Na Li, 7-6 (7-3), 7-5

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New Haven, Connecticut

Total Prize Money: $708,000

Luis Horna vs. Robby Ginepri Chris Guccione vs. Guillermo Garcia-Lopez Steve Darcis def. Vincent Spadea, 7-5, 5-0, retired Wayne Odesnik vs. Sebastien Grosjean Viktor Troicki vs. Alex Bogomolov Jr. Thomaz Bellucci vs. Arnaud Clement Denis Gremelmayr def. Marcos Daniel, 3-6, 6-3, 6-3 Olivier Rochus def. Evgeny Korolev, 6-4, 6-4 Potito Starace def. Jiri Vanek, 6-2, 7-6 (9-7) Nicolas Lapentti leads Fabio Fognini, 2-1 Ramon Delgado vs. Luka Gregorc John Isner vs. Igor Kunitsyn

Fernando Verdasco (1) vs. Dudi Sela

Notes

led here in 2005.

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Beijing, China

Total Prize Money: $

S.Williams/V.Williams (2) def. A.Bondarenko/K.Bondarenko (6), 4-6, 6-4, 6-1 A.Medina Garrigues/V.Ruano Pascual (4) def. Z.Yan/J.Zheng (8), 6-4, 7-6 (7-5)

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Cincinnati, Ohio

Total Prize Money: $175,000

Nadia Petrova (2) def. Maria Kirilenko (3), 1-6, 6-2, 6-1 Nathalie Dechy def. Amelie Mauresmo (5), 6-4, 3-6, 6-2

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Beijing, China

Elena Dementieva (5) def. Dinara Safina (6), 3-6, 7-5, 6-3

Elena Dementieva (5) def. Vera Zvonareva (9), 6-3, 7-6 (7-3) Dinara Safina (6) def. Na Li, 7-6 (7-3), 7-5

Dinara Safina (6) def. Jelena Jankovic (2), 6-2, 5-7, 6-3 Elena Dementieva (5) def. Serena Williams (4), 3-6, 6-4, 6-3 Na Li def. Venus Williams (7), 7-5, 7-5 Vera Zvonareva (9) def. Sybille Bammer, 6-3, 3-6, 6-3

Jelena Jankovic (2) def. Dominika Cibulkova (16), 7-5, 6-1 Serena Williams (4) def. Alize Cornet (15), 3-6, 6-3, 6-4 Elena Dementieva (5) def. Caroline Wozniacki, 7-6 (7-3), 6-2 Dinara Safina (6) def. Jie Zheng, 6-4, 6-3 Venus Williams (7) def. Victoria Azarenka (12), 6-3, 6-2 Vera Zvonareva (9) def. Francesca Schiavone, 7-6 (7-4), 6-4 Sybille Bammer def. Lucie Safarova, 7-5, 6-4 Na Li def. Kaia Kanepi, 4-6, 6-2, 6-0

Jelen