Player/Team 1 starts as the "Blocker" and Player/Team 2 as the "Scorer." The Blocker throws first and attempts to close as many numbers as possible. The Scorer follows and attempts to score as many points as possible, on still open numbers, before the blocker can close all of the numbers. Once all the numbers have been closed, the round ends, and the Scorer tallies their points. The Players/Teams then switch roles and continue, with the new Blocker throwing first. The Player/Team with the most points is the winner.