This page explains how Sam Xiao (USATT# 217430)'s rating went from 1479 to 1451 at the 2023 Pong Planet Butterfly Championships held on 15 Apr 2023 - 16 Apr 2023. 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.