Well, there are some other strategies too such as the arbitrage betting (called surebetting too). In this strategy all the possible outcomes of a game are being bet.
Regardless, of the result the return exceeds the sum of your stakes which is the profit you make. For instance,
let's say Alcaraz faces Sinner and the odds offered by the sportsbooks A and B are as in the following table:
|
|
Alcaraz Winner
|
Sinner Winner
|
| Sportsbook A | 1.80 | 2.05 |
| Sportsbook B | 2.05 | 1.80 |
Now let's pick up the following bets:
Sinner Winner in sportsbook A: 2.05
Alcaraz Winner in sportsbook B: 2.05
You bet 100$ on Sinner to Win on the sportsbook A. If he wins, you get 205$.
You bet 100$ on Alcaraz to Win on the sportsbook B. If he wins, you get 205$.
Whatever the result is you get as return 205$.
You have bet in total 100$ + 100$ = 200$.
Your sure profit is 205$ - 200$ = 5$.