An exhausted Andy Murray credited his mental strength and physical freshness for his tie-break victory over David Ferrer in the Sony Open final on Sunday after a gruelling two hour, 45 minute battle.
World number one Serena Williams fought back from a set down to beat Maria Sharapova 4-6 6-3 6-0 and win the Sony Open for a record sixth time on Saturday as she continued her dominance over her closest rival.
Spain's David Ferrer ended German Tommy Haas's dream of reaching the Sony Open final with a 4-6 6-2 6-3 victory in Friday's semi-final.
Five-time champion Serena Williams advanced Tuesday to the Sony Open finals and tied the women's record for career victories in the tournament by beating No 5-seeded Li Na 6-3, 7-6 (5).
China's Li Na reached the quarterfinals of the Miami Masters on Monday by beating Spanish teenager Garbine Muguruza 7-6(6), 6-2.
World number one Novak Djokovic and Russian Maria Sharapova shook off windy conditions to move into the fourth round of the Sony Open at Miami on Sunday.
China's Li Na made a winning return to WTA action on Thursday, beating Kiki Bertens of the Netherlands 6-3, 6-1 in her second-round opener at the Miami WTA and ATP Masters hard-court tournament.
US Open prize money will reach $50 million by 2017 and the event will return to a Sunday finish in 2015 under a five-year deal announced on Wednesday between organizers and the ATP and WTA tours.
Li Na of China hits an overhead to Kiki Bertens of the Netherlands at the Sony Open tennis tournament in Key Biscayne, Florida, March 21, 2013.
The US Open will revert back to a 14-day tournament from 2015 after United States Tennis Association (USTA) officials reached an agreement with players on restructuring the playing schedule and increasing prize money.
The schedule of WTA games in 2013.
Maria Sharapova rose to number two in the rankings on Monday after her impressive title run at the BNP Paribas Open but says she is motivated much more by Grand Slam glory than the prospect of regaining the top spot.