匹配下注是一种从博彩公司的免费赌金或返款里获利的低风险赌博方法。

很多赌马赌球等博彩公司都赠送一些赌金给新玩家甚至老玩家押注，玩家需在此之上继续押注。 也有博彩公司在促销时给玩家退注，比如若输10镑以上退10镑。 无论那种方法，玩家都不能直接把这个钱拿出来。

Matched betting (also known as back or lay bet matching, or double betting) is a betting technique used by individuals to profit from the free bets and incentives offered by bookmakers. It is generally considered risk-free as it is based on the application of a mathematical equation rather than chance. A typical return for a matched bet where the stake is returned is 85%+ of the free bet offer amount, and 70%+ where the stake is not returned. Most free bets are stake not returned.