Tennis Channel filed a program carriage rule complaint with the Federal Communications Commission against Comcast, alleging that the cable operator is violating a rule that prohibits cable companies from favoring networks they own over unaffiliated cable services, Multichannel News reports.

Tennis is on a premium sports tier, while Comcast-owned networks Golf and Versus are positioned on basic tiers that are much more widely available to subscribers, Tennis Channel executives argue.

Comcast officials didn’t immediately comment.

–Elizabeth Jensen