This page explains how Lars Andersen (USATT# 1171084)'s rating went from 879 to 867 at the Spin & Smash Spring Open held on 4 Jun 2021 - 6 Jun 2021. 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.