I could be way off...but these type of situations are the kind I like to follow very closely to make a big bet.
Cavs have lost 4 in a row @ NO. NO is on a 4 game losing streak. Cavs on back to back Fri-Sat (Heat).
Line opens tonight -4.5 Cavs tonight...Bounced to -5 now back to -4.5 yet the ML...