Just took a look at the 5th fav and whether or not it was the same odds as any following favs. 5 races matched with only 1 win. The win did not cover the cost of those 5 races, so dropping them from my selections to date increased my profit from 56% to 67% to date. My S/R dropped slightly from 33.33% to 30.56% but my average win increased from 53.69 to 54.32 units. Interesting.

I will keep an eye on including and not including those races as my sample data increases in size and duration.