Single pool mutuels.
"....In practical terms, if a horse is being played more heavily in exacta bets to finish first relative to the money bet on the horse to win, the win price for the horse would be lower than in a standard mutuel pool to reflect the positions taken by the exacta players."
and vice versa, ..Oh that sounds just great....mel's Win bet lowers my Exacta...
and my spreadsheet becomes obsolete
http://www.drf.com/news/single-pool-...it-too-complex