San Francisco's 2-0 win Thursday night on Fox earned a 7.8 fast national rating and 12 share, down 12 per cent from last year's St. Louis Cardinals-Texas Rangers matchup. The previous low was an 8.1 for the 2008 Philadelphia Phillies-Tampa Bay Rays series.
Fox said Friday the rating was up 3 per cent from the Giants' rout in Game 1 on Wednesday.
Ratings represent the percentage of all American homes with televisions tuned to a program. Shares represent the percentage of all homes with TVs in use at the time.