For postseason NFL contests, this is the weekend for wild-card games, when the teams that have squeaked their way into the playoffs try to earn the chance to extend their seasons even more, by beating the teams with slightly better records or division positioning. Today at 4:30 p.m. ET on ESPN, in the first postseason game of 2017, the 12-4 Oakland Raiders visit the 9-7 Houston Texans (pictured). Then, at 8 p.m. ET on NBC, the 9-7 Detroit Lions visit the 10-5-1 Seattle Seahawks. The two other wi