This page explains how Phil Mork (USATT# 222873)'s rating went from 1275 to 1253 at the Central Carolinas Super League event from 30 Jan 2020. 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.