In a Swiss-system tournament, sometimes a player has such a great lead that by the last round he is assured of winning the tournament even if he loses the last game. This has some disadvantages. First, a Swiss-system tournament does not always end with the exciting climax of a knockout final. Second, while the outcome of the final game has no bearing on first place, the first-place player can decide who wins second or third prize. In the 1995 All-Stars Tournament in Scrabble, tournament directors paired David Gibson, who had by then clinched first place, with the highest-ranked player who could not win a prize so that the second- and third-ranked players could compete between themselves for the final placements. The "Gibson Rule" is optional at Scrabble tournaments, as players at smaller tournaments may still have an incentive to win their last game to improve their overall rating. Players may also be "Gibsonized" if they have clinched a spot in the next round, and can be paired with the highest-ranked player who cannot possibly qualify for the next round.