This page explains how John Imanol Marerro (USATT# 1174844)'s rating went from 2151 to 2140 at the 2024 Butterfly Puerto Rico Teams Open held on 12 Apr 2024 - 14 Apr 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.