This page explains how Jiangbo Qiu (USATT# 283506)'s rating went from 647 to 603 at the TTA Beg/Inter League - SATURDAY event from 1 Jun 2024. 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.