This page explains how William Lagozzino (USATT# 16801)'s rating went from 1256 to 1236 at the West Central Table Tennis event from 17 Dec 2017. 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.