I am sorry you got scammed, you should provide us some proofs, like screenshots of conversation and transaction from you to this guy. To be honest, you payed money on blind to newbie account without using escrow.
I checked that topic, listen, nobody can predict sport results with 100% and nobody will sell you outcome of rigged game. Keep that in mind too.

You are dealing with this newbie? and you were trust him if he's really a good sport tipster? When i see his thread, there are full of question from other users (such like what does OP means "fixed matches", or maybe that's just another speculation tips).
0.12 btc is too high for that, it's your own fault, There is still another user who really legit in sports tips if you look carefully in Gambling discussion section.

Yes next time I suggest you be very careful who you deal with. I was posting a lot in that thread about OP and that it will be hard for people to trust him if he doesn't show any proof. I'm sorry you got scammed but to be honest you should of seen the warning signs from concerned members. Even though I did bet on OP's free tip and won,I only put on a small amount as I didn't fully trust his tips. Just be careful next time you deal with someone on here.

It's OP's own fault. He never did any background check on the person and thus OP lost 0.12 Bitcoins. You should have been careful trusting anyone with your coins, specially because bitcoin transactions are irreversible.

However, your thread is a scam as it is. Everybody should know about it. You claim to have knowledge of fixed games. However, you do not post your bet slips nor post any predictions for any match. You just post random blank bet slips, which do not prove anything regarding your so called fixed games. Also, even if you did gave a sample bet it didn't win.