Meanwhile, NBC and Fox shared first place, with "America's Got Talent" scoring the night's best individual ratings, according to preliminary numbers.
NBC tied Fox in ratings with an average 2.3 rating/7 share in the advertiser-coveted 18-49 demographic and took first place in total viewership outright with an average 7.8 million.
"The U.S. Olympic Trials '12: Swimming Finals" at 8 p.m. posted a 1.9/6 in the demo with 6.9 million total viewers, while "America's Got Talent" the following hour showed a modest ratings increase with a 3.0/8, and drew 10.4 million total viewers (which also made it the night's most-watched program).
"American Ninja Warrior" at 10 drew even with last week for a 2.0/5 and attracted 6 million total viewers.
Fox, which came in third in total viewers with 5.4 million, aired "Hell's Kitchen" at 8, which was down 8 percent in the demo with a 2.3/7 and drew 5.5 million total viewers, and "MasterChef at 9, which was also down slightly in ratings with a 2.2/6 and 5.6 million total viewers.
ABC took third place in ratings with a 1.9/6 and second in total viewers with 5.7 million. "The Bachelorette" at 8 dipped slightly from last week with a 2.2/7 and took 7 million total viewers, while "Glass House" at 10, which last week premiered with a 33 percent drop from last summer's equivalent premiere of "Extreme Makeover: Weight Loss Edition," fell to a 1.2/3 with 3.3 million total viewers.
Univision came in fourth in ratings and fifth in total viewers with a 1.4/4 and 3.6 million.
CBS, which drew fifth place in ratings and fourth in total viewers with an average 1.2/4 and 5.2 million, ran repeats throughout the night.
