09/18/2008 05:12 am ET | Updated May 25, 2011

Olympics Ratings: Phelps Relay Gives NBC Its Best Saturday Since 1990 With 31.1 Million Average

Michael Phelps' record-setting eighth Olympic Games gold medal delivered the best Saturday-night ratings on NBC since 1990.

An average of 31.1 million viewers stayed home Saturday to watch Phelps and his teammates compete in the mens 4x100 medley relay, as well as gymnastics and beach volleyball. An estimated 70 million viewers watched over the course of the whole primetime program, peaking at nearly 40 million during the 11 p.m. half hour, when the relay was held.

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