The premiere of WWE Saturday Morning Slam averaged more than one million viewers last Saturday. The show scored a 0.7 (0.7) cable rating, was seen in 747,000 TV households and averaged 1.13 million viewers. WWE Saturday Morning Slam topped all programming in the "Vortexx" block of programming on CW that morning. "Justice League Unlimited," scored a 0.6 rating and averaged 1.00 million viewers and the following show, "Dragon Ball Z Kai," scored a 0.5 rating and averaged 841,000 viewers.
The show's rating was up 75 percent compared to the four-week average for the previous programming in the 10AM timeslot. It was also the CW's most-watched Saturday morning program since March 10 and most-watched in the timeslot since February 25.
The show topped the following demographics on Saturday morning: Kids under 18, Kids 2-5, Kids 2-11, Kids 6-11, Kids 9-14, Boys under 18, Boys 2-5, Boys 2-11, Boys 6-11, Girls under 18, Girls 2-11, Girls 6-11, Girls 9-14, and Female Teens (F12-17).