By Daniel Bates The madness continues come Thursday. Four Sweet 16 matchups are set to tip-off across two NCAA Tournament regions, with some great battles in the West and South. Two one-seeds and a pair of two-seeds look to move on; as basketball powers Arizona, Duke, Gonzaga and Villanova try to take care of business and secure an Elite 8 bid. Here’s the schedule for what should be a tremendous night of college hoops: No. 4 Arkansas vs. No. 1 Gonzaga 7:09 PM ET (CBS)Gonzaga enters Thursday night’s game as a solid favorite against the Razorbacks of the SEC. According to ESPN’s Basketball Power…