A handicap is a virtual advantage or disadvantage (in goals or points) applied to one of two rivals before a match, aiming to even out their odds on paper. There are two main variants: the European handicap, with whole-number values, and the Asian handicap, with fractional lines that can trigger partial refunds.
When the gap in quality between two teams is huge, betting or predicting directly on the winner stops being interesting: the favorite wins almost every time, and the odds or the challenge lose their appeal. A handicap corrects that imbalance by applying an artificial advantage to the weaker team (or a disadvantage to the favorite) before the result is calculated, so the prediction or bet is decided on a "corrected" scoreline, not the real one.
The European handicap works with whole-number values: -1, -2, +1, and so on. If the favorite plays with a -1 handicap, they need to win by two goals or more for a bet or prediction with that handicap to count as correct; winning by just one goal would, for handicap purposes, equal a draw. It's the easier variant to understand because it doesn't involve half-goals or refunds.
The Asian handicap adds lines with decimals or quarter-goals (-0.25, -0.5, -0.75, -1, -1.5...) precisely to eliminate the possibility of a draw in the handicap result, something that can happen with the European version. With lines like -0.25, if the favorite wins the match the bet wins, but if it's a draw, only half the stake is refunded (a partial refund); with lines like -0.5, there's no possible draw in the handicap: you either win or lose the entire bet based on the real result. This granularity is what makes the Asian handicap more complex but also more precise for evening out very lopsided matches.
Match Prophets doesn't use handicaps: every prediction is judged on the match's real score, with no artificial advantages or fractional lines, and no money involved. Knowing what a handicap is mostly helps you follow the vocabulary that comes up in betting conversations, but your pool with friends is always decided by the result exactly as it happens on the pitch.