Brian Steinberg Senior TV Editor The battle for cable-news viewers is coming to March Madness. CNN intends to run a new promo during the heavily watched NCAA men’s basketball tournament that throws a sharp verbal elbow at Fox News Channel and the legal defamation case filed against it by Dominion Voting Systems. The promos will air starting this weekend on TNT, TBS, TruTV and CBS, all of which carry the games under a joint rights agreement held by the owners of those networks, Paramount Global and Warner Bros. Discovery, which is also the parent of CNN. Fox News Channel is not mentioned in the promo script, reviewed by Variety, but the references are clear. “What should you expect of a news network?” asks the narrator. “Some bury the truth, while we fight to reveal the facts. The only side we are on is yours.” Viewers see images of CNN correspondents and anchors such as Abby Phillip and Clarissa Ward.