So someone who's used to seeing this stuff and bets half times more than me, explain to me why LSU is -3 for 1H, with a line at -4 1/2 to -4 now at many OS books now, my local has -4 1/2, he opened at -6 LSU, and I see team total of 36 1/2 for LSU?  So that means 18 1/4 pts in each half for one...