CBS was able to win the Monday ratings battle in the 18-49 demo, thanks to its broadcast of the 2011 NCAA Men’s Basketball National Championship, according to Nielsen overnight numbers. The game between Butler University and the University of Connecticut netted a 6.7 during the 9:30-11 p.m. slot, down 6% from last year’s game. The pregame coverage, which started at 9 p.m., drew a 4.4. The network had an overall 5.0 rating/13 share.The game drew a 13.3 overnight rating, which is down from the 2010 match-up featuring Duke and Butler, which drew 17 percent of the market.