The NCAA March Madness bracket was announced at 6 PM EST, and only three hours later, betting lines started to trickle out in Las Vegas and at offshore sports books across the world. Lines began to appear most notably at the Wynn Hotel in Las Vegas after the clock crossed the 9 o’clock hour. Right now the futures market offers to most value, but there have been significant shifts in point spreads in the overnight hours that you should know about —