Top seed Roger Federer begins against Colombia's Alejandro Falla, while Nadal plays Kei Nishikori of Japan.
BBC: Andy Murray to play Czech Jan Hajek in Wimbledon opener
She will next play 17-year-old Kristyna Pliskova after the Czech knocked out top seed Timea Babos.
"I'm no longer working with Todd Martin, " the top seed told reporters on Monday.
CNN: Djokovic dumps coach Martin ahead of Monte Carlo campaign
The Bobcats, the tournament's top seed, won the East Region with wins over Canisius and Union.
Top seed Lleyton Hewitt also advanced to the quarter-finals by beating Belgium's Olivier Rochus 6-2 6-1.
The Hoyas dropped to 15-2 as the top seed in the Big East tournament.
The Serbian top seed beat Lukasz Kubot of Poland 6-3 7-6 in the Serbia Open final.
Top seed Roger Federer was playing Bjorn Phau of Germany in the night session.
In the other semifinal, Russian qualifier Dmitry Tursonov will face top seed Tomas Berdych.
Defending champion and top seed Victoria Azarenka was made to work harder on Saturday.
Meanwhile, top seed Djokovic eased through his second round match at the China Open in Beijing.
And top seed Roger Federer beat Spain's Feliciano Lopez to claim his place in the last four.
Meanwhile, top seed David Ferrer was able to successfully defend his Buenos Aires Open crown in Argentina.
Top seed Novak Djokovic overcame his troublesome ankle problem to see off Finland's Jarkko Nieminen 6-4 6-3.
If the Orange enters the tourney as less than a top seed, their odds are even lower.
FORBES: Why Syracuse Basketball is Likely to be Disappointed Again
"He was very close to take that second set, " the top seed told the official ATP website.
There were no such problems for top seed Marat Safin, who beat Brazilian Fernando Meligeni 6-4 7-6.
Bucknell is the top seed for the third straight year and opens against last-place and eighth-seeded Navy.
She knocked out top seed Maria Sharapova in Friday's quarterfinals, her first-ever win over a top-10 player.
In other matches, top seed Maria Sharapova suffered a shock 6-2 7-5 defeat by Hungarian veteran Greta Arn.
BBC: Heather Watson loses to Shuai Peng in Auckland quarters
That means the odds of a top seed winning are as good as the other 64 teams combined.
The Rangers can probably forget about earning the top seed in the conference for the second straight season.
Former Wimbledon champion Martinez is enjoying a good week, having beaten top seed Jennifer Capriati in the previous round.
Later on Sunday, Spain's Fernando Verdasco upset top seed Andy Roddick to win the SAP Open in San Jose.
Meanwhile, top seed Jelena Jankovic had a 7-5 6-2 victory over Vania King.
Serbia's Novak Djokovic, the top seed, was facing American Sam Querrey for a place in the quarterfinals later Thursday.
The top seed also beat Willstrop in straight sets to win the Commonwealth Games title in Delhi last October.
Though top seed Federer achieved his 39th successive win, he lost a tie-break for the first time in 16.
Top seed Azarenka beat Poland's Agnieszka Radwanska 6-3, 6-3 in the other semifinal.
Former world number one Maria Sharapova is the top seed in Strasbourg and plays her second-round match on Wednesday.
应用推荐