Hello,
I make two kinds of bets. My big bets are made using statistical analysis and handicapping, by big I mean between $100 and $1000, betting to win on - odds or, risking the bet on + odds. These bets are usually on favorites, once in a while the analysis will pick a small dog.

I also blindly bet all dogs > +130. these are small bets, usually $50. I also play 2 and 3 pick parlays when I can get odds that are in orbit, I play these just for fun, usually $20 to $25 each.

On days when the big dogs won big the picks that were a result of analysis lost. Usually the analysis picks are favorites.

On days when the picks that were a result of analysis won big the big dogs lost.

Wierd, huh?