Defending champion Donna Vekic, of Croatia, earned a hard-fought win over British wild card Gabriella Taylor 7-5, 5-7, 7-6(3).
India's top singles player Somdev Devvarman was on Saturday drawn to a play a qualifier while wild cards Yuki Bhambri and Jeeven Nedunchehziyan will have to fight it out with top-100 players in their first rounds at the Aircel Chennai Open.
Madison Keys beat fellow American CoCo Vandeweghe for the second time in eight days with a 6-4, 3-6, 6-3 victory on Monday to reach the second round of the Cincinnati Open.
Former US Open champion Del Potro fired down 11 aces and did not face a break point during the one hour, 33 minutes match.
Top seed Roger Federer reached the Halle Open semi-finals on Friday, beating defending champion Florian Mayer 6-3, 6-4 and edging closer to a ninth title at the Wimbledon tune-up event.
Two time Miami Open winner Victoria Azarenka crushed Serbia's Jelena Jankovic.
Defending champion and top seed Stanislas Wawrinka scored a clinical 6-1, 6-4 win over Borna Coric of Croatia to progress to the men's singles quarter-finals at the ATP Chennai Open tennis tournament.
A summary of sports events and sports persons, who made news on Wednesday.
Six-time champion Novak Djokovic's hopes of turning around his season at the Miami Open ended in the second round when he was defeated 6-3, 6-4 by Frenchman Benoit Paire.
Roger Federer booked his place in the ATP World Tour Finals for a record-tying 12th consecutive year when he dismissed South African Kevin Anderson 6-4, 6-4 to reach the third round of the Paris Masters on Wednesday.
Tournament favourite Novak Djokovic beat Finnish veteran Jarkko Nieminen 6-2, 7-5, 6-2 on Tuesday, kicking off his quest for a first ever Paris trophy to add to his eight other Grand Slams.
Polish fifth seed Agnieszka Radwanska was the highest women's casualty at the Miami Open on Saturday, blown away for the second time this year by Croatian Mirjana Lucic-Baroni.
Rafael Nadal was made to wait before his second-round Rogers Cup match due to several rain delays but did his part to put the schedule back on track with a speedy 6-2 6-3 win over Frenchman Benoit Paire on Wednesday.
Yuki Bhambri asserted his class over a promising Arjun Kadhe even as young Sumit Nagal's ATP World Tour debut ended in a tame defeat at the Tata Open Maharashtra in Pune on Tuesday.
A summary of sports events and sports persons, who made news on Friday.
Top seed Serena Williams made short work of Kazakhstan's Zarina Diyas in the third round of the BNP Paribas Open.
Milos Raonic overcame third seed Grigor Dimitrov 7-5, 3-6, 6-3 to reach the third round at the Madrid Open on Tuesday and set up an all-Canadian clash with teenager Denis Shapovalov.
Two-times champion Rafa Nadal crashed out in the second round of Wimbledon on Thursday after being out-muscled and out-thought in four sets by an inspired Dustin Brown of Germany.
World number one Simona Halep swatted aside American Nicole Gibbs while Maria Sharapova was flawless in her straight sets victory over Romania's Mihaela Buzarnescu in the opening round of the Shenzhen Open on Monday.
Images from Day 4 of the French Open matches played at Roland Garros in Paris on Wednesday
A misfiring Rafael Nadal had trouble hitting the mark but the third seeded Spaniard still had enough to beat American Donald Young 6-4, 6-2 on Tuesday and advance to the fourth round of the BNP Paribas Open.
Former World No 1 Ana Ivanovic was upset 7-5, 6-4 by 42nd-ranked Karolina Pliskova of the Czech Republic in the second round of the US Open on Thursday.