This page explains how GLENN TILLERY (USATT# 86259)'s rating went from 1377 to 1425 at the 2013 Decatur Open held on - 17 Aug 2013. 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.