According to who?
Cable TV's highest rated show is on Monday night.
Some of the highest rated shows on TV are on on Monday night.
Monday is one of the best nights to reach audiences actually based on viewership numbers. However the Big Break has a falling audience.
I was going to assume you meant Monday Night Football on ESPN, until I read the WWE Raw comment just above.
Anyways, the BBA producers had to be face palming themselves when their eye candy contestant went out day 1, and one of their better golfers went out day 2. DVR'ing the rest of the way.