I agree with Dman's advice, here's an idea for how to play Tennessee if Illinois moves on tonight.
As Dman said, bet 114 to win 100 on Iowa St. Iowa St win = +84 / Illinois win = -114 and parlay is still alive.
If Illinois wins, on to Friday night w/ Tennessee -142 hedge..... you bet 284 on Tenn ML.
With a Tenn win, you have a $70 profit: -16 original bet -114 Iowa St bet + 200 win on Tenn ML.
With a Creighton win, you have a $607 profit: -114 Iowa St bet -284 on Tenn bet +1005 on winning parlay.
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or... it's only $16. Let it ride.