This page explains how Basil C Ibegbu (USATT# 74880)'s rating went from 1980 to 1990 at the Denver Table Tennis ALliance Sanctioned Quincenal 3 of 5 held on - 1 Aug 2015. 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.