This page explains how Dony Oswan (USATT# 265278)'s rating went from 1523 to 1547 at the Swan Sunday League event from 18 Aug 2019. 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.