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If the spread is set at +7, the underdog must either win the game outright or lose by fewer than seven points in order to cover. For the favorite to cover, they must win by more than seven points.

Through Spreads\n\n Market makers buy and sell stocks on behalf of their clients, and they make money from the difference between the bid and ask price (the spread). The bid price is the highest price that a buyer is willing to pay for a stock, and the ask price is the lowest price that a seller is willing to accept.