MOSCOW -- A criminal investigation was opened after a 15-year-old boxer died following a competitive bout at a Russian youth tournament.Anton Sidorov was knocked down twice in a fight Saturday following blows to the head at a sports club in the city of Vladimir, about 110 miles (177 kilometers) east of Moscow, the main investigative agency for the region said.After the referee ended the fight, reportedly Sidorovs third bout of the tournament, the young boxer began to have convulsions. He was treated by medical staff at the scene but died in an ambulance.Investigators said in a statement that the case is being handled as a criminal matter of death caused by negligence, saying an earlier head injury could have played a role in Sidorovs death.The investigation has already established information that the childs health required extra attention because of a serious head injury he had suffered several years before, the regional branch of the federal Investigative Committee said.Alexander Kiryukhin, head of the regional health department, said that Sidorov, who was a student at a local state sports academy, was not medically fit to fight. Regional governor Svetlana Orlova ordered an investigation Monday into how he was medically cleared to take part in the competition.Authorities also said the tournament had been organized without input from the regional boxing federation. New Balance Outlet Store .J. -- Josh Cribbs was in the Pro Bowl in February and out of a job six months later. Air Max 90 Australia . Catch all the action on TSN2 at 11pm et/8pm pt. The nine-time Big 12 champion Jayhawks are positioning themselves for another title, as they have run out to a flawless 6-0 mark in conference play thus far. http://www.discountaustraliashoes.com/cheap-vans-fake.html . Numbers Game looks into the Canadiens securing the services of Thomas Vanek in a trade with the New York Islanders. The Canadiens Get: LW Thomas Vanek and a conditional fifth-round pick. Discount Asics . -- PGA TOUR Canada member Steve Saunders took a three-stroke lead Saturday in the Web. Wholesale Balenciaga Sneakers . 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.Listen to our podcast as Jamie Redknapp and Alan Smith review Arsenals 2-0 win over West Brom. Two goals from Alexis Sanchez saw Arsenal move above Manchester City into third place in the Premier League, but remain 10 points behind leaders Leicester.Sky Sports pundits Redknapp and Smith felt the scoreline papered over the cracks and questioned Wengers future at the club after fans held banners aloft calling for him to leave. Football Special Podcast Click here to listen to Jamie Redknapp and Alan Smith review Arsenals win over West Brom Listen to all the Sky Sports football podcasts and subscribe via iTunes.dddddddddddd Also See: Match report As it happened ' ' '