This page explains how Vern Palmisano (USATT# 91503)'s rating went from 1338 to 1358 at the 2015 Decatur Open held on - 15 Aug 2015. 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.