The Chicago Blackhawks are in the playoffs for a fourth straight season, and they didn't have to wait around to the final minute of the regular season this time around. They might want to work on their defense just a bit in the three remaining games. Brent Seabrook scored at 8:19 of the third period, and the Blackhawks clinched a playoff spot Saturday night, beating the Nashville Predators 5-4 after blowing a 4-0 lead.