Nielsen sticks with subscriber report challenged by ESPN

LOS ANGELES (Reuters) - The Nielsen ratings agency on Friday reaffirmed a report about U.S. pay television customers that was challenged by Walt Disney Co's ESPN sports network. Media reports said the Nielsen data suggested ESPN lost 621,000 subscribers from a month earlier. Neither Nielsen or ESPN released the numbers publicly, but ESPN questioned the accuracy of the findings. In a statement on its website, Nielsen said that an "extensive review" undertaken after ESPN objected showed that estim