UNDERCOVER BOSS was Sunday's top program in viewers and key demos and THE AMAZING RACE won its time period in key measures as CBS won its fourth consecutive Sunday in viewers and key demographics, according to Nielsen preliminary live plus same day ratings for April 4.

CBS placed first on Sunday in viewers and key demographics with UNDERCOVER BOSS topping all of the night's programming in all ratings measures and THE AMAZING RACE 16 also winning its time period, according to Nielsen preliminary live plus same day ratings for March 28.