This page explains how Xiaoping Zhu (USATT# 215951)'s rating went from 1956 to 1974 at the Topspin Advanced League event from 16 Feb 2019. 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.