Thursday night's local rating for the Rangers-Blue Jays on Fox Sports Southwest: 2.3
Thursday night's local rating for Saints-Vikings NFL opener on Channel 5: 20.6
I'm not exactly sure how that translates into number of homes, but it does seem that for every 1 home tuned into the Rangers, there were 10 homes tuned into a football game that didn't even involve the Cowboys.
Source.
Edit: Someone pointed out that Fox Sports is on cable/satellite and the NFL game was on free everywhere Channel 5. Yep, legitimate point.
Edit: Someone pointed out that Fox Sports is on cable/satellite and the NFL game was on free everywhere Channel 5. Yep, legitimate point.