• Bob Odenkirk (L)

Bob Odenkirk (L) (Photo : Reuters/David McNew)

While the Grammys did expectantly well on Sunday in terms of ratings, they weren't the only show in town. "The Walking Dead" had 15.6 million viewers, while the premiere of "Better Call Saul" drew 6.9 million people.

Only the Grammys had higher ratings than those two shows, according to Yahoo. While the music awards show had an average of 25.3 million viewers, that figure was three million viewers lower than last year.  

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The ratings of "The Walking Dead" were a little lower than in February 2014, which drew 15.8 million viewers-but they're far from flatlining. After DVR-delayed viewing is added into the calculations, it will likely hit the mark of 20 million viewers.

In addition, the show remains the top-rated TV show. Only time will tell if "Better Caul Saul" will be able to achieve similar success.  

It will be clearer after the ratings of the two-hour premiere's second part are released. That is particularly true because "The Walking Dead" did not air on the same evening.

What is the secret to the show's success? That is greatly due to its huge popularity among adults in the range of 18 to 49, which is extremely critical for advertising companies.

However, "Better Call Saul" also did incredibly well. The show is a prequel to "Breaking Bad" and stars Bob Odenkirk, playing an unethical lawyer who later becomes Saul Goodman.  

Most notably, the premiere of "Better Call Saul" attracted 4.4 million young adults, making it the highest figure of any series premiere on cable, according to USA Today.  After its premiere, the show moved to Mondays at 10 p.m. ET/PT.