WWYD?

[Micjones]

So you win a pair of tickets to see the Jayhawks play at the Fieldhouse.
Your first choice cancels on you and you wind up taking another friend to the game.

10 minutes into the contest your shorter friend is having trouble seeing.
They ask to switch seats with you. You oblige.

Another 20 minutes goes by and the booth announcer calls the number of the seat you vacated, for your pal, as the winner of a chance to take home $10,000 by hitting three free throws.

Your tag-along walks onto the court and sinks the three shots.

Are you entitled to a portion of their winnings?
If so, why?