Golf pairing betting or matchup wagering is about picking one of two golfers in a pair to finish better than the other. Bets on the golfer who scores lowest or finishes best at the end of the tournament are winners. If one of the golfers in the pair misses the cut, the other one wins. If both miss the cut, the golfer with the lowest score wins.
You book these bets at currently posted moneyline odds and get paid if your golfer wins the matchup. Who wins the entire tournament is of no consequence.