This page explains how Behdad Rahdar (USATT# 88567)'s rating went from 1891 to 1890 at the 2014 Austin Winter Open Table Tennis Tournament held on - 11 Jan 2014. 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.