CBS’s "Big Brother," Fox’s "MasterChef" and NBC’s "America’s Got Talent" topped the Nielsen ratings on Wednesday night, according to TVbytheNumbers.com.

At 8 p.m. "Big Brother" kicked off the evening with a 2.8 rating in the 18-49 demographic, ahead of the first hour of "MasterChef," which had a 1.8, NBC’s "Minute to Win It" with a 1.7, and ABC’s first hour of the "CMA Music Festival," which earned a 1.6 rating in the demo.

At 9 p.m. "America’s Got Talent" logged a 2.5 rating in the demo and the second hour of "MasterChef" had a 2.1. Hour two of the "CMA Festival" climbed to a 1.8 in the 18-49 demo, while CW’s "Plain Jane" barely registered with a 0.4 in the same demographic.

The "CMA Festival’s" final hour at 10 p.m. dipped to a 1.6 rating in the demo, against only reruns.