CBS’s Sunday doubleheader coverage of the 2017 “March Madness” NCAA Basketball Tournament scored big on social media, helping set the stage for the tournament’s Final Four weekend.

North Carolina’s thrilling win over Kentucky on CBS yesterday drew a whopping 5.1 million Twitter and Facebook interactions from more than 2.2 million unique users, according to Nielsen’s Social Content Ratings report. CBS’ coverage of South Carolina’s win over Florida drew 1.6 million social media interactions from 928,000 unique social media accounts, said Nielsen.

CBS will air the tournament's "Final Four" games Saturday night and the "March Madness" championship game on Monday. 

AMC’s The Walking Dead slayed social media Sunday, drawing 555,000 Twitter and Facebook interactions to lead all entertainment shows for the day. Hallmark Channel’s When Calls The Heart finished second with nearly 100,000 social media interactions, according to Nielsen.