Mercedes chairman Niki Lauda says half of the Formula One grid are putting themselves forward for Nico Rosbergs vacant seat next year.In a surprise announcement on Friday, the reigning champion retired from the sport with immediate effect, leaving Mercedes facing the huge task of replacing him over the winter. Team boss Toto Wolff said the search for Lewis Hamiltons new teammate would start on Monday, but with 18 of the best drivers in the world already under contract for 2017 it is unlikely to be a straightforward process.Nevertheless, Lauda let slip that many of the current F1 drivers had already been in touch with him to talk about the situation.Practically half of Formula One and maybe more, he told Gazzetta dello Sport. I am constantly taking calls.Mercedes has one obvious choice already under contract in Pascal Wehrlein, who drove his debut season for Manor this year and has frequently tested next years tyres with the team. But Lauda hinted that Mercedes might want someone with more experience.Hiring a youngster is a risk and we dont know how strong they would be, he added.Lauda admitted the situation had taken him by surprise.I took it badly. I was not expecting it. Nobody in Mercedes imagined he could say enough. At first I didnt believe him.Nico, I told him. Are you pulling my leg? Is it a joke? But he seriously said it was all true. Truly incredible. Nike Shoes Wholesale Australia . The Celtics closed out their first preseason under Stevens on Wednesday night with a 101-97 victory over the Brooklyn Nets, who rested a lot of their lineup including former Celtics Kevin Garnett and Paul Pierce. Nike Shoes Australia Outlet .S. hockey team after paying his dues as an NHL general manager for more than three decades and giving up a lot of his free time to help USA Hockey. http://www.cheapnikeaustraliashoes.com/ . Woodson said during a radio interview Thursday that the Knicks Carmelo Anthony doesnt get the same calls as other superstars. Nike Mens Shoes Australia . The Dutchmans tenure got off to a poor start when referee Guido Winkmann awarded a penalty within two minutes for Niklas Starks clumsy challenge on Alexandru Maxim. Nike Womens Shoes Australia . The defence is doing its part, too. Drew Brees threw a pair of touchdown passes in the first half and the guys on the other side made sure that was enough, sending the Saints to a 17-13 victory over the Atlanta Falcons on Thursday night. KUALA LUMPUR, Malaysia -- Former badminton world champion Ratchanok Intanon has been cleared of a doping breach and will be allowed to compete at the Olympics next month.The Badminton World Federation issued a statement Monday saying it had lifted a provisional suspension on the No. 4-ranked Ratchanok, allowing Thailands Olympic medal hopeful to return to competition immediately.The BWFs doping hearing panel held an expedited hearing via video conference on Saturday for Ratchanok, who returned a positive sample during the Thomas and Uber Cup finals in China on May 15 for triamcinolone acetonide, a class of steroid hormones known as glucocorticoids.Use of the substance is prohibited during competition if administered orally, intravenously, intramuscularly or rectally, but the panel found that because administration of the substance was intra-tendinous -- directly into the tendon -- it did not require a therapeutic use exemption and was part of an ongoing medical treatment, so there was no violation committed.ddddddddddddThe BWF said the 21-year-old Ratchanoks medical background and records of treatment were submitted as part of the hearing.This evidence together with the testimony from the expert witness established to the satisfaction of the panel that the substance was administered on May 13, before the competition as part of on-going medical treatment of the athlete and that the route of administration of the substance was intra-tendinous, the statement said.The Olympic badminton tournament runs Aug. 11-20. ' ' '