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.

TBS’s Kentucky-Notre Dame NCAA college basketball tournament game telecast Saturday night drew a network record 14.7 million total viewers, the network announced Sunday.

The game, which saw Kentucky keep its undefeated season alive with a narrow win over the Fighting Irish of Notre Dame to reach the tournament’s Final Four round, peaked at 19.7 million viewers between 10:45 p.m. and 11 p.m. (ET), according to Nielsen.  

The game also stands as the most watched college basketball ever on cable television, according to the network.

Coverage of last night’s games – TBS' Kentucky/Notre Dame and Wisconsin/Arizona telecasts – delivered the highest average viewership and rating for the Saturday Regional Finals in 10 years (since 2005), averaging 11.7 million viewers, up 34% from 2014, and a 6.8/13 rating/share, up 33% from last year, according to network officials.    

Overall, the CBS/Turner Sports coverage of the 2015 ‘March Madness’ tournament is delivering its highest average viewership in 22 years, averaging 9 million total viewers through last night’s telecasts, based on Nielsen Fast national audience data.