Record: 9-15
This is an interesting spot. I looked at it from several different angles and those angles support both sides. It's up to you to choose the right angle. I went with one I thought best.
Angle #1
1. Does the classic "Letdown Spot" help us here?
The Letdown Spot Angle = A team is so emotionally high after a big victory, it doesn't prepare sufficiently and hasn't come down psychologically for the rigors of the following game and will lose it outright, even to modest competition.
So we have this angle in three parts IMO:
Part A:
A) Mississippi State just snapped the longest winning streak in basketball history and two days later faces a in-conference nemesis that is a #1 seed.
This helps us. This is classic capping. Most people stop here and take the GameCocks. Miss State is not playing an average team (and this angle says you can lose to average competition) it is playing an excellent team that knows it.
Result? Miss State should lose.
Now let's look at the second aspect of this angle
Part B:
B) The books know squares will bet this way so they gave themselves points to compensate for it.
This is interesting. The line is -3.5 South Carolina even AFTER a team just beat the greatest basketball team ever in its sport. The books clearly were prepared for Mississippi State action and therefore expect a very tight game Miss St can win and/or cover in a nail-biter. So the 3.5 looms large here.
With this line, we can officially say this spot, this letdown theory, is no longer unique and books and squares know it well and it is in the line. That is just conjecture but this line has to say that in part.
Result? Miss State should win and/or cover because we agree that the books win more often than not and have set a sharp line.
Part C:
C) History
Correlation is not causation and this is only a sample size of two. But it is interesting.
I looked back at the 1974 Notre Dame team that ended UCLA 88 game win-streak to see what they did the next game.
Amazingly they BEAT an excellent Kansas team that won its conference that year straight up by 2. Now I don't know what the line would have been but if, like MSU, they were getting points, they obviously cover.