This page explains how Yun Peng (USATT# 76263)'s rating went from 1958 to 1949 at the Swan Sunday League event from 28 Dec 2015. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.