This page explains how Yoo Pou Sang (USATT# 25337)'s rating went from 1986 to 1998 at the Spttc Saturday Night League event from 6 Oct 2018. 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.