ABC's Mistresses (3.1 million/0.7 rating) returned on a new night, but its ratings were way down from last year's premiere.
Before that, The Bachelorette (5.9 million/1.6 rating) was down 20 percent from last week's premiere.
Fox's So You Think You Can Dance (3.7 million/1.0 rating) returned with a revamped format, but it was all-time low for an opener of the veteran competition series.
After that, Houdini and Doyle (2.1 million/0.5 rating) slipped.
CBS aired encores of Scorpion (4.4 million/0.7 rating) and an original installment of Person of Interest (5.4 million/0.8 rating).
NBC aired Stanley Cup Finals (3.8 million/1.2 rating).
And The CW went with Memorial Day (1.2 million/0.3 rating).
Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.