I think you'd be amazed at how simple it is. Just 5 factors inc. home advantage, road performance, travel etc.

The system is the same for NRL, AFL and Super 12s. I just keep it simple, just factoring in the most influencial factors.

Originally I was going to use a highly detailed version of my Super 12 system but I found that too many factors drowned out the influence of the more important factors. Basically, the simple version worked better.

I'm going to try it at Super League, I'll just need the lines for previous games this season. I'm not going to test the NRL any further (38-13), I'm convinced it is profitable there. I'll test it more on the AFL (17-6) until I get a statistically significant result.

Don't have any idea of what my advantage is though. I'd guess that it as much as 15-20% for Super 12s, 10%+ for NRL and AFL.