Sonneborn-Berger

The Sonneborn-Berger is the sum of 1 x (scores of opponents defeated) + .5 x (scores of opponents drawn). Compared with the Solkoff, this rewards scores against high-scoring opponents but does not penalize as severely failures to win against low-scoring opponents. It’s commonly used as a tie break in Round Robin tournaments simply because it is one of the few that actually can break ties in a Round Robin. (Solkoff, Median and Modified Median will all be the same for players who tie in a Round Robin; Cumulative-based tie breaks make no sense since the order of games is basically random).

{YEL!} will likely retire this tiebreak in favor of Cumulative going forward.

Contact {YEL!}