This page explains how William Lagozzino (USATT# 16801)'s rating went from 1281 to 1279 at the West Central Table Tennis event from 7 Jan 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.