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. Cheap Hawks Jerseys Authentic . He had spent 16 days on the disabled list before being activated Thursday. He was batting just .203 when he came to bat in the 11th inning on Sunday. Cheap NBA Jerseys . After overcoming a three-goal deficit the Senators forced the game to overtime only to watch it slip away as Seth Jones scored the winner 3:49 into the extra period as the Nashville Predators defeated the Senators 4-3 Monday night. http://www.cheaphawksjerseys.com/. (AP) -- The head of the committee that developed Major League Baseballs plan to expand instant replay says he is optimistic the system will be in place this season, even though owners and unions for players and umpires have yet to approve. Cheap Atlanta Hawks Jerseys .J. -- Having Ondrej Pavelec earn his 100th NHL win and seeing Mark Scheifele and Evander Kane break goal droughts were nice highlights for the Winnipeg Jets. Cheap Swingman Hawks Jerseys . PAUL, Minn.Liverpool manager Jurgen Klopp has dismissed suggestions there are problems in his relationship with Jordon Ibe, insisting the young winger has a promising future. The 20-year-old impressed throughout Liverpools 2-1 victory at Bournemouth on Sunday, providing the cross for Daniel Sturridges headed goal.But the appearance was only his third since February, despite Liverpools intense schedule, and came after he had featured regularly for Klopp in the early stages of his time at Anfield. Rumours of a rift between the duo had surfaced over what Klopp perceived to be an unwillingness to track back and defend, but having watched him re-establish himself as a first-team option against a below-par Bournemouth, the former Borussia Dortmund boss praised Ibes big talent.I heard from somewhere that Jordon has some problems with me or something? said Klopp. Klopp (right) is backing Ibe for big future in the game Only a few young players can come up, and sometimes they are in the squad, sometimes not.dddddddddddd Hes still a brilliant, big, big talent which is very good for English football.He did well with the pass for the first goal, and the cross for the second. I was very happy. It was a beautiful pass from Jordon Ibe (for Sturridges goal). We had a lot of moments and its absolutely exciting.Liverpools next match is against Everton at Anfield on Wednesday, live on Sky Sports 1 HD. Also See: WATCH: Klopps Sturridge row Premier League grades Klopp happy with perfect win Liverpool news Cheap NFL Jerseys Wholesale Jerseys Wholesale NFL Jerseys Jerseys From China Wholesale NFL Jerseys Cheap NFL Jerseys Cheap Jerseys ' ' '