I am trying to calculate a team's winning % for a particular game using a few different statistics.
It is based on Bill James' Pythagorean Win % Formula:
Win %= (Runs scored)^2 / (runs scored ^2 + runs allowed ^2)
My real question comes with how I use runs allowed. Instead of using normal runs allowed, I decided to use ERA of the starting pitcher. So, would it make sense to use the starting pitchers' ERA and multiply it by 162 to get runs allowed (ignoring the bullpen for now)?
As a side note- I calculated runs scored using teams' to date runs scored, divided by games played, and then multiplied times 162.
Is this correct logic?