KEY BISCAYNE, Fla. -- Lauren Davis defeated Zhang Shuai of China 6-2, 6-3 at the Sony Open on Wednesday as former U.S. Open champion Juan Martin del Potro withdrew with a left wrist injury. The 20-year-old Davis started 2014 ranked No. 72 and moved up to No. 55. From 1-1 in the first set, Davis jumped ahead to a 4-1 lead. In the second set, Zhang started with a 3-1 lead, but Davis won the next five games to take the match. "Im playing really well and I have a lot of confidence," Davis said. "I think theres a time for everything and I feel like this is my time." Fellow American Christina McHale defeated Zheng Jie of China 6-4, 6-2. Wildcard recipient Victoria Duval didnt fare as well as her fellow Americans, losing to Dutch qualifier Kiki Bertens 7-6 (5), 6-1. Del Potro has been troubled by his left wrist since winning the Sydney title at the beginning of the year. At the recent Indian Wells tournament he played one doubles match, but then withdrew from the singles. The 37th-ranked Andrea Petkovic of Germany, a top 10 player in 2011, posted a 6-3, 6-4 win over Maria-Teresa Torro-Flor of Spain. In first round mens action, 80th-ranked Adrian Mannarino of France ousted 71st-ranked Nikolay Davydenko of Russia 6-4, 7-5. Czech Radek Stepanek defeated Daniel Brands of Germany 6-3, 6-0. Ivo Karlovic of Croatia claimed up a tough 7-6 (3), 7-6 (5) win over French qualifier Paul-Henri Matthieu. Nike Air Max Womens Sale 2018 .75 million contract for the 2014 season and avoided arbitration. The team announced the agreement on Tuesday. Nike Air Max Womens Sale Orange . -- The Oakland Raiders expect to have starting right tackle Tony Pashos back for Sundays game against the Houston Texans. http://www.nikeairmaxwomenssale.com/ .com) - Stephen Currys jumper with 3. Nike Air Max Womens Sale Green . - Wesley Matthews got a chance to practice his bow-and-arrow 3-point celebration on Sunday night. Nike Air Max Womens Sale Grey . Simona Halep of Romania claimed the fifth title of her career by beating Samantha Stosur of Australia 7-6 (1), 6-2 in the womens final. After trading sets, Gasquet trailed 4-3 in the decider but broke back to 4-4 in a game that went to seven deuces with Kukushkin constantly failing on his forehand shots.WASHINGTON -- Right-hander Doug Fisters arbitration-avoiding contract with the Washington Nationals is for one year with a base salary of $7.2 million. Fister also can earn performance bonuses of $75,000 each for reaching 200 and 210 innings pitched. He threw 208 2-3 innings last season, when he went 14-9 with a 3.67 ERA for the Detroit Tigers. Washington acquired him in a trade. Fister made $4,0075,000 last season.dddddddddddd He had asked for $8.5 million in arbitration, while the Nationals submitted an offer of $5.75 million. They agreed to terms over the weekend. Only one other Nationals player still could go to arbitration, right-handed reliever Tyler Clippard. He asked for a raise to $6.35 million; the team offered $4.45 million. Clippard made $4 million last season. ' ' '