This page explains how Danny Wan (USATT# 219179)'s rating went from 1959 to 1893 at the 2021 June Open @ Princeton Pong held on 12 Jun 2021 - 13 Jun 2021. 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.