last night second half OKC lead LAC 52-43

few minutes into half time:

Pinny: -1.5 -105 LAC, +1.5 -105 OKC

CRIS: -2 -110 LAC, +2 -110 OKC

Greek: -1 -110 LAC, +1 -110 OKC

I was not watching the game but these popped up on sportsoptions. I assumed -1 greek and +2 cris could be a good middle opportunity. It got me thinking about 2nd half push probabilities... how can I figure them out?