Synonims: Multiple, Parplay.

Ante post bets are bets placed before the sports event starts. Such bets can sometimes take advantage of better odds available.
There are also Trading Pre-live, taking advantage of small odds variation of these ante post bets as the match approaches its start. In horse racing the Pre-live odds change very much and in the last minutes before the race starts, which makes the Trading here more attractive.
In Betfair, the ante post bets that remain unmatched are deleted when the match begins.

A set of several bets placed on different outcomes of the same event, with various bookmakers, which guarantees a profit nevermind of event's outcome. Arbitrageopportunities occur when there is a high discrepancy between odds offered by different bookies, and don't last long, since bookmakers continually adjust their odds.
Example: betting in the three possible outcomes in a soccer match (1X2) covering all options. Generally you can’t have profit with this because the bookmakers have to ensure their margin (see: Overround). Usually the sum of all probabilities are above 100% but if for any reason the Overround is below 100% it’s possible to Bet in all outcomes and have profit. To make an Arbitrage inside a certain Market you must compare odds from different bookmakers because in one single Bookmaker you won’t find any possible Arbitrage in a certain Market.

A type of Bet where one of the runners is given a kickstart advantage (Handicap), so the outcome of Bet depends whether Handicap has been covered or not.

Along with standard +1, 0 and -1 handicaps available in European Handicap, Asian Handicap offers possibility of betting at 0.25, 0.5 or 0.75 goals handicaps.
Two main characteristics of Asian Handicap:
1. Unlike European Handicap, Asian Handicap allows Void bet.
2. In addition to full goal handicaps seen in European Handicap (-1, -2, +1, etc.), Asian Handicap allows zero goal (also known as Draw No Bet or Winner), half goal and quarter goal handicaps.
See also: Handicap, European Handicap.

Handicap Types Explained:

Handicap 0 - You win if your chosen team wins the match. If the match is a draw you are refunded your Stake.
Handicap 0, +0.5 - You win if your chosen team wins the match. If the match is a draw, your Bet is split in half - one half is considered a win, the other half is considered a draw and its stakes are refunded.
Handicap +0.5 - Your Bet wins if your chosen team draws or wins the match.
Handicap +0.5, +1 - You win if your chosen team wins or draws the match. If your team loses with a one goal difference, you lose 50% of the amount staked.
Handicap +1 - You win if your chosen team wins or draws the match. If it loses with a one goal difference, you are refunded your Stake.
Handicap +1, +1.5 - You win if your chosen team wins or draws the match. If your team loses with a one goal difference, your Bet is split in half - one half is considered a win, the other half is considered a draw and its Stake is refunded.
Handicap +1.5 - You win if your chosen team wins, draws or loses the match with a one goal difference.
Handicap +1.5, +2 - You win if your chosen team wins, draws or loses the match with a one goal difference. If it loses with a two goal difference, you lose 50% of your Stake.
Handicap +2 - You win if your chosen team wins, draws or loses the match with a one goal difference. If your team loses with a two goal difference, you are refunded your Stake.
Handicap +2, +2.5 - You win if your chosen team wins, draws or loses the match with a one goal difference. If your team loses with a two goal difference your Bet is split in half - one half is considered a win, the other half is considered a draw and its Stake is refunded.
Handicap +2.5 - You win if your chosen team wins, draws or loses the match with a goal difference of less than three.
Handicap 0, -0.5 - You win if your chosen team wins the match with a goal difference of one or more. If your team draws, you lose 50% of the Stake.
Handicap -0.5 - You win if your chosen team wins the match.
Handicap -0.5, -1 - You win if your chosen team wins the match with a goal difference of two or more. If your team wins with one goal your Bet is split in half - one half is considered a win, the other half is considered a draw and its Stake is refunded.
Handicap -1 - You win if your chosen team wins the match with a goal difference of two or more. If your team wins with a one goal difference, you are refunded your Stake.
Handicap -1, -1.5 - You win if your chosen team wins the match with a goal difference of two or more. If your team wins with just a one goal difference, you lose 50% of your Stake.
Handicap -1.5 - You win if your chosen team wins the match with a goal difference of two or more.
Handicap -1.5, -2 - You win if your chosen team wins the match with a goal difference of three or more. If your team wins with a two goal difference, your Bet is split in half - one half is considered a win, the other half is considered a draw and its Stake is refunded.
Handicap -2 - You win if your chosen team wins the match with a goal difference of three or more. If your team wins with a two goal difference, you are refunded your Stake.
Handicap -2, -2.5 - You win if your chosen team wins the match with a goal difference of three or more. If your team wins with a two goal difference, you lose 50% of your Stake.
Handicap -2.5 - You win if your chosen team wins the match with a goal difference of three or more.