With the ongoing fiasco about cutting off the last 8 seconds in a lot of markets, I found this: http://the506.com/nflmaps/ At one point they define what a "secondary market" is in terms of NFL blackout and in-game switch rules: OK, so Austin and San Antonio are not "secondary markets" according to the NFL (I don't think any part of the Austin or San Antonio markets are within 75 miles of Jerryworld in Arlington). Therefore there would seem to be no rule *requiring* that these markets switch over to the Cowboys game before the completion of the Texans game. These are not secondary markets for the Cowboys per NFL rules. So any claims that the NFL forced the switch appear to be BS. But here's another thing in the section on "in-game switches" (my boldfacing for emphasis): Couple of questions here. 1. Are the Cowboys the "local team" as defined by the NFL in the Austin and San Antonio markets? I doubt it. (Would like to know if there is a precise definition of "local market" here.) That must not apply. 2. Maybe the switchover has to take place at 4:10 ET (3:10 local), not 4:15, which is stupid. Having said that, it sounds like the Austin and San Antonio affiliates are part of a "small number of other markets that request it" -- since we've already seen that these are not Cowboys "secondary markets." Bottom line, if these explanations are accurate (and I've found this to be a reputable site), seems to be this: These affiliates decided that they would crap on Texans fans for the almighty Cowboys, and they asked Fox to cut over to the Cowboys coverage at 3:10 local time. Once the network has notice that these affiliates want to leave the Texans game at 3:10, they are all moved over to the Cowboys coverage (which might explain why they all cut over at exactly the same time).