This page explains how Olivia Lu (USATT# 1171351)'s rating went from 1556 to 1554 at the 2023 USATT National Club Team Championships held on 2 Jul 2023 - 4 Jul 2023. 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.