This page explains how Jianting Lu (USATT# 1171276)'s rating went from 1229 to 1133 at the MDTTC April Open 2023 held on 8 Apr 2023 - 9 Apr 2023. 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.