Sports betting is simply defined as betting on the occurrence of an event; if the given event occurs the bettor wins, if not he loses the wager. Sports betting is a popular past-time all over the world; in fact it is deeply rooted in the culture of almost all civilizations. The diversity in the number of sporting events to choose from makes sports betting a challenging and rewarding activity for those who pursue it seriously and those who are recreational bettors. When discussing sports betting, its important to know that sports betting has a respectable reputation in Europe and consequently online sports betting is not under persecution whereas in the US, at best the country's stance on online sports betting can be termed ambiguous.

Sports betting went online with the growth of the Internet and now online sports betting has its own dedicated followers. The principle on which sports betting works is no different from how all betting takes placethe bottom-line is that the house should not lose money.

The bookmakers publish odds for sporting events depending upon their understanding of the probability of that event occurring. The odds are dynamic and can change with the betting trend and time left for the game to take place. If bookmakers notice more people betting on a favorite with low odds, they will try and pull some of the crowd to bet for the underdog. They can do this by reducing the returns on the favorites or by shortening the odds on the underdog.

After the odds are published by the bookmakers, bettors study the odds and place bets with a bookmaker who they believe is offering them the most favorable odds. If the bettors win, they take home the principal amount they bet as well as the win money. With online betting, bettors are required to have an account with the online sports company, payment is usually via credit cards or online transaction facilitators. Online bookmakers are known to offer extremely competitive odds and also provide the bettors with the option of placing many specialty bets.

There are too many variables that can affect the result of a sports bet. Some of these factors are objective, such as goals or points scored, while some are subjective, for example the presence/absence of a top performer from a team. Bettors can make use of free advice offered by sports tipsters and use sports betting softwares that help in understanding how different variables can affect the outcome of an event. It also helps bettors to place bets on events they have little knowledge of. Without the help of tipsters and sports betting software, even the most proficient and experienced bettor cannot hope to cover more than two sports.

There are various financial strategies based on statistical formulae that bettors both novice and experts can use. These include Flat, Bank Percentage, Kelly Criteria, Fixed Profit, Martingale, etc. An interesting aspect of sports betting is the belief that betting methods such as arbitrage and scalping are risk-free and guarantee a net profit.