This page explains how Ivan Tsai (USATT# 271889)'s rating went from 1591 to 1554 at the 2024 DFWTT Spring Mini Giant Round Robin held on 23 Mar 2024 - 23 Mar 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.