I don't think the decision is up to the players on if they play but I think St. Johns will play to win.
Now, a game to be aware of is Houston vs Baylor. I think Sampson may rest some guys a little. They are playing for absolutely nothing. They will be a #1 seed in the dance and want to win the Big12 tourny. The line should be way more than -4 for them at Baylor, a team that is not that good.