I am in the same situation. I am not touching the 2nd half. Ok ST is a good 2nd half team (as is Memphis). I could easily see OSU winning by 20, but at the same time I would not be surprised to see Memphis lose by 10-12.
This is what I call taking the edge away from the shop. It also reduces your at risk on the original play if some kind of catastrophe happens and the team down comes back inside of the points you were laying for the game. Obviously this will rarely happen (maybe 3-6 percent of the time) but you get my drift I think.
G/L the rest of the tourney.
Some will totally disagree with these thoughts but that is ok.