This page explains how Nathan A Crabtree (USATT# 95450)'s rating went from 1701 to 1686 at the 2023 TT&M's Butterfly Madness held on 24 Mar 2023 - 26 Mar 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.