golf 3-ball betting - odds on a half win, half push?

[MalikHusam]

Need some help, could someone explain the math to me?

Smith/Burns/Thomas today, I had +150 on Justin Thomas in a 3-ball

-4 Thomas
-4 Smith
E Burns

So what are the odds I'm paid at?

Originally I had $100 to win $150, but now $100 to win... ?