English Most bookmakers are deliberately against surebets and bettors who practice them. At the slightest suspicion, they may restrict a professional player—for example, set a maximum bet of 1 $ or block their account completely.
How do bookmakers understand that they are dealing with a surebet player and not an ordinary player? Fractional bet amounts, for example 20,58$, regular withdrawals of money from the bookmaker's account, bets on minor divisions and junior tournaments. In addition, bookmakers themselves sometimes organize «traps»: they offer deliberately high odds for an event, and everyone who bets on it is placed on the «black» list.