First off, I'm pretty sure this makes sense but I just want to be sure: Using data from odd years to generate a model and data from even years to backtest the model is a legitimate way to test the accuracy of my model (ie not data mining I think it's called).
Second, when modeling and backtesting, should I be using a team's statistics on the season or at the time of the game? I would imagine that trying to use each team's stats at the time of the game would be very difficult to accomplish.
Apologies if this is a rookie question, just a youngin over here trying to learn something.