KEY BISCAYNE, Fla. Mike Foltynewicz Jersey . -- 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. John Smoltz Jersey .com) - Brad Stuart has yet to play a regular-season game for the Colorado Avalanche, but that didnt deter the club from signing the veteran defenseman to a two-year contract extension on Monday. Greg Maddux Jersey . Rajne Soderberg, the director of the Stockholm Diamond League event, said in an email Friday that the ban still holds. Euromeetings, the organization representing Europes top track events, "will continue to recommend that members do not invite athletes who we believe cause disrepute to our meetings and our sport. http://www.thebravesteamshop.com/Braves-Sean-Newcomb-Kids-Jersey/ . The 25-year-old McIlroy, who is from Northern Ireland, was eligible to play for either Ireland or Team GB when golf makes its return to the Olympics in Brazil for the first time since 1904.MIAMI - Right-handed reliever Kevin Gregg has agreed to terms on a minor league contract with the Miami Marlins pending a physical. Gregg, who turns 36 this month, pitched last year for the Chicago Cubs and had 33 saves with a 3.48 ERA. He has 177 career saves, including 661 in two seasons with the Marlins. Dansby Swanson Jersey. With the agreement Monday, the Marlins acquired their second reliever in as many days. On Sunday, they traded the 39th overall pick in this weeks draft to the Pittsburgh Pirates for right-hander Bryan Morris. Cheap Capitals JerseysCheap Blackhawks JerseysCheap Avalanche JerseysCheap Stars JerseysCheap Wild JerseysCheap Predators JerseysCheap Blues JerseysCheap Jets JerseysCheap Ducks JerseysCheap Coyotes JerseysWholesale Flames JerseysCheap Golden Knights JerseysCheap Oilers JerseysCheap Kings JerseysCheap Sharks JerseysCheap Canucks Jerseys ' ' '