I have almost joined a professional service where I had to pay money, but I wanted a list of the wagers, stakes, odds and ROI (return on investment) which could not be provided, so I decided to pass.

With my MMA (mixed martial arts) handicapping, I can tell you my wagers, the odds, stake, my ROI for each week, month, the last 12 months, etc. My worst month in the previous 12 months had a 10% ROI, the last 6 months I have been ticking along at a 27%+ ROI, and 47%+ in the last 2 months..... the weekend just gone, I had an 80%+ ROI so that would obviously bump my ROI up significantly.

If one cannot answer these questions, how do they/you know the risk the risk they are taking is justified? I have hit 7-1 on horses before, but I can't consistently hit winners on a horse with a system and return 20%+ ROI like I do with MMA.