That is a really good point moisiFr.
Something weatherwizard and I were talking about the other day is the danger of using market based parameters….is our database logging the best line? How much variance MUST you account for.
Better systems have parameters that were constants throughout the previous day (ie. team just score 1 or 2 runs). There is ZERO risk in that case of having a faulty system due to erroneous data.