No, these are different types of arbitrage situations. A surebet strategy means that a bettor places bets with different bookmakers on opposite outcomes of the same event and makes a profit.
For example, bets on a hypothetical football match Zenit – CSKAon the total goals.
- Bookmaker №1 offers odds of 1,91 on Over 2,5
- Bookmaker №2 offers odds of 2,25 on Under 2,5
Regardless of the score at which the match ends, the player will make a profit of 3,3% of the bankroll.
A bookmaker middle is a strategy that allows for a win on both bets simultaneously. Each middle has its own width.
For example, bets on a hypothetical basketball match Los Angeles Lakers – Phoenix Suns
- Bookmaker №1 offers odds of 1,96 on Over 159,5
- Bookmaker №2 offers odds of 1,96 on Under 161,5
The width of the middle is 2 points, meaning that with a total of 160 or 161, the player who placed bets on this middle will win both bets. In any other case, the player will win one of the bets and have an overall “loss” of 2% of the bankroll.
