By choosing tennis as your preferred sport for Betgratis, you have already given yourself an “edge” against those who bet on or offer odds on other sports. To use this “edge” to make money consistently, however, you’ll need to understand two fundamental principles first. Then apply the power of mathematics.
It is sheer folly to place a tennis bet (or a bet on anything) with a “traditional” bookmaker. The expression “You can’t beat the bookie” is axiomatic; you just cannot beat the bookie over time. It’s because the odds are always mathematically calculated in favour of the bookmaker. Everyone knows (or should know) that the bookie’s mathematical “edge” against the punter is necessary for him to make a profit so that he can stay in business.
Computer technology has given rise to a new form of betting, known as “exchange betting” or “matched betting”. With “betting exchanges” there is no bookie to beat; in other words, there is no middle-man. Every punter bets against another punter or punters somewhere out there in the Internet ether. Any punter (or “trader”) can place a “back” bet that a player or team will win, and/or place a “lay” bet that a player or team will lose. Thus, any punter can choose to act as an ordinary bettor and/or as a bookmaker.
With exchange betting the odds are not set by a third-party or middle-man; they are set by the punters themselves. Who place requests for odds at which they are prepare to place bets (if they wish to act as an ordinary bettor). Or place offers of odds at which they are prepare to lay bets (if they wish to act as a bookmaker).
As the “back” bettors gradually lower their requested odds and the “lay” bettors gradually raise their offered odds. The software on the exchange betting web site matches. All the back bets with all the lay bets at the instant they coincide. The accounts of the “backers” or “layers” are then credit with their winnings automatically. A few seconds after the end of the event according to its result.
Obviously, the technology for providing such a “fair” betting service must paid for somehow. This payment is take in the form of a commission on the punter’s net winnings on an event (or “market”). That is, commission is charge only on any positive difference between winnings and losses on the same event.