To date in 2020, bookmakers offer players three types of bets. This is an ordinary, express, and system. If the first two types are widespread and are used by all bettors and all sports gamblers, the system is relatively rare. Even experienced bettors do not always know about its features, not to mention novice sports betting fans. Meanwhile, this is the least risky betting option that allows you to insure yourself against incorrect predictions of one or more outcomes. And so in this article, we will find out what an online sports betting system is.