English Yes, this is one type of arbitrage situation. In general, arbitrage betting means the opportunity to place bets at different bookmakers on all possible outcomes. Thus, a player who places all these bets will make a profit regardless of the outcome.
The simplest type of “surebet” has two legs, that is, two opposite outcomes. This type of arbitrage is the easiest and fastest to place, since you only need to work with two bets at two different bookmakers. Such “surebets” are best suited for beginners. More advanced users have three- and four-outcome arbitrage.
Bets on “middles” are also considered arbitrage betting.