It would be a good introduction to solidity and the 3rd party problem of smart contracts.
An example betting contract for anyone interested (note it was eventually refunded and not run):
https://etherscan.io/address/0xf4b8ccc5734ed7d2d8beb5fddd223...
And an overview with some reasonable criticism:
https://www.reddit.com/r/ethdev/comments/6sd8hl/mayweather_v...