This page explains how BORAY EFECAN (USATT# 277659)'s rating went from 885 to 880 at the MDTTC January Open held on 27 Jan 2024 - 28 Jan 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.