you might want to look at this site before you get too deep into the odds game:

http://www.bigsoccer.com/forum/showthread.php?t=89156

"kunathm" wrote:

I use a three letter code for the team, put in the colums the person in the
office. I put in the rows the teams playing with the lines. How would I find
out the odds of winning based on everyone having a 50/50 chance per game, or
the odds based on the odds makers online?