This page explains how Albert Dosamantes (USATT# 90955)'s rating went from 1248 to 1238 at the Austin Table Tennis League event from 3 May 2012. 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.