From when I frequented OneHash early in 2016 it is a PvP type of betting site.
Your odds are dependent on the other players bet wagered amounts on those particular games.
So the odds shift according to how many and for how much those other players are betting on those games.
There is a site that is quite similar in that respect.
It is BetBTC.
They only deal with sports matches (which seem to be what you are interested in betting since Directbet.Eu majority of matches were just these) and unlike OneHash do not offer any other variables to wager on such as the price btc or esports.
Their thread is located here:
https://bitcointalk.org/index.php?topic=856175.0Welcome to the gambling thread and enjoy your stay.