WASHINGTON, May 29: A federal appeals court ruled on Tuesday that Comcast Corp. Did not discriminate against the Tennis Channel by placing it in a different cable television subscription tier than its own sports networks. The unanimous ruling from the U.S. Court of Appeals for the District of Columbia Circuit reverses a 2012 decision from the Federal Communications Commission that Comcast unfairly placed the sports channel in a more expensive and thus less-watched viewing tier than its own Golf Channel and NBC Sports Network. (agencies)