It's a good idea. But your betting site needs some tweaking. You need a nice interface and a variety of sporting events to attract gamblers. For a start, you will improve the display of dates. Right now it looks like this: NaN/NaN/NaN. I hope it works for you.

I made a test bet on Palmeiras 1 iDNA to test the platform:
https://scan.idena.io/transaction/0x79d198280f805115abdcf56cc1413e0ada4a116bf4be284ea5afca704f19a33d