Early returns indicate the San Francisco Giants' four-game sweep of the Detroit Tigers could bring in the lowest World Series ratings on record.
Fox averaged an 8.9 overnight Neilsen rating for the four games, including a 10.6 overnight for Sunday night's series-clinching victory by the Giants in 10 innings. Through four games of last year's Series between the St. Louis Cardinals and Texas Rangers, the network averaged a 9.3 overnight.
Fox signed an eight-year deal earlier this month to extend its MLB television rights.
The silver lining for Fox is Game 4 peaked at a 12.8 rating in the 11:30 p.m. ET window when it was in extra innings, making it the network's most-watched program since the "American Idol" finale in May, according to The Sports Business Journal.
With the New York Giants' victory over the Dallas Cowboys leading right into Game 4, Fox did win the night with an overall 6.3 rating/15 share with adults 18-49, according to Nielsen.
NBC earned a 6.3 overnight for the Denver Broncos' rout of the New Orleans Saints on "Sunday Night Football."