for
Danyal Hassan

USATT#: 94943

##### Introduction
This page explains how Danyal S Hassan (USATT# 94943)'s rating went from 1925 to 1908 at the JOOLA North American Teams held on 23 Nov 2018 - 25 Nov 2018. These ratings are calculated by the ratings processor which goes through 4 passes over the match results data for a tournament. The following values are produced at the end of each of the 4 passes of the ratings processor for Danyal S Hassan for this tournament.

Initial Rating Pass 1 Pass 2 Pass 3 Final Rating (Pass 4)
1925 1751 1925 1925 1908

You can click here to view a table of all the resultant values from each of the 4 passes (and the initial rating) of the ratings processor for all of the 980 players in this tournament. Sections below for further details on the initial rating and the 4 passes of the ratings processor.

Note: We use mathematical notation to express the exact operations carried out in each pass of the ratings processor below. Whenever you see a variable/symbol such as for example ${X}_{i}^{3}$, we are following the convention that the superscript part of the variable (in this case "3") indicates an index (such as in a series), and it should not be misconstrued to be an exponent (which is how it is used by default).

##### Initial Rating
The initial rating of a player for a tournament is the rating the player received at the end of the most recent tournament prior to the current tournament. If this is the first tournament the player has ever participated in (based on our records), then the player has no initial rating.

The initial rating for JOOLA North American Teams held on 23 Nov 2018 - 25 Nov 2018 for Danyal S Hassan, and its source tournament are as follows:
Initial Rating From Tournament Start Day End Day
1925 LYTTC Open 10 Nov 2018 10 Nov 2018

Click here to view the details of the initial ratings for all the players in this tournament.

##### Pass 1 Rating
In Pass 1, we only consider all the players that come into this tournament with an initial rating while ignoring all the unrated players. If a rated player has a match against an unrated player, then that match result is ignored from the pass 1 calculations as well. We apply the point exchange table shown below to all the matches participated in by the rated players:

Point Spread Expected Result Upset Result
0 - 12 8 8
13 - 37 7 10
38 - 62 6 13
63 - 87 5 16
88 - 112 4 20
113 - 137 3 25
138 - 162 2 30
163 - 187 2 35
188 - 212 1 40
213 - 237 1 45
238 and up 0 50

Suppose player A has an initial rating of 2000 and player B has an initial rating of 2064, and they played a match against each other. When computing the impact of this match on their rating, the "Point Spread" (as it is referred to in the table above) between these two players is the absolute value of the difference their initial ratings. When the player with the higher rating wins, presumably the better player won, which is the expected outcome of a match, and therefore the "Expected Result" column applies. If the player with the lower rating wins the match, then presumably this is not expected, and therfore it is deemed as an "Upset Result" and the value from that column in the table above is used. So, in our example of player A vs player B, if player B wins the watch, then the expected outcome happens, and 5 points are added to player B's rating and 5 points are deducted from player A's rating. Looking at Danyal S Hassan's match results and applying the point exchange table, gives us the following result:

##### Danyal S Hassan's Wins
Winner Loser
Point Spread Outcome Gain Player USATT # Rating Player USATT # Rating
217 EXPECTED 1 Danyal S Hassan 94943 1925 Rachel Wang 96633 1708
121 EXPECTED 3 Danyal S Hassan 94943 1925 Michael Song 94940 1804
0 0 Danyal S Hassan 94943 0 Olivia Ruegg 1132369 0
161 EXPECTED 2 Danyal S Hassan 94943 1925 Xiaofeng (frank Zhu 27551 1764
315 EXPECTED 0 Danyal S Hassan 94943 1925 Jinpeng Xiao 85228 1610
193 EXPECTED 1 Danyal S Hassan 94943 1925 Kaiyang Zhu 96404 1732
185 EXPECTED 2 Danyal S Hassan 94943 1925 Chiupong Huang 88109 1740
0 0 Danyal S Hassan 94943 0 Kevin Chan 1132354 0
59 EXPECTED 6 Danyal S Hassan 94943 1925 Nancy Zhou 72888 1866
545 EXPECTED 0 Danyal S Hassan 94943 1925 Connie Yap 94145 1380
146 EXPECTED 2 Danyal S Hassan 94943 1925 John W Potter 10393 1779
100 EXPECTED 4 Danyal S Hassan 94943 1925 Stephen Hu 90084 1825
98 EXPECTED 4 Danyal S Hassan 94943 1925 Jiaming Cao 220985 1827
118 EXPECTED 3 Danyal S Hassan 94943 1925 XINHAU YIN 81327 1807
93 EXPECTED 4 Danyal S Hassan 94943 1925 Harrison Ngo 89471 1832
43 EXPECTED 6 Danyal S Hassan 94943 1925 Kui Zhang 32162 1882
62 EXPECTED 6 Danyal S Hassan 94943 1925 Xiaofeng Guo 34134 1863
149 EXPECTED 2 Danyal S Hassan 94943 1925 Jane Gao 220793 1776

##### Danyal S Hassan's Losses
Winner Loser
Point Spread Outcome Loss Player USATT # Rating Player USATT # Rating
185 UPSET -35 Phil Dadzie 217349 1740 Danyal S Hassan 94943 1925
213 UPSET -45 Lisa Zhao 97133 1712 Danyal S Hassan 94943 1925
75 EXPECTED -5 Narasimhan (Tiger) Ramakrishnan 25608 2000 Danyal S Hassan 94943 1925
36 EXPECTED -7 Larry Bavly 47761 1961 Danyal S Hassan 94943 1925
84 UPSET -16 James Yen 92420 1841 Danyal S Hassan 94943 1925
0 -0 Kosta Jovanovic 1132367 0 Danyal S Hassan 94943 0
76 EXPECTED -5 Joel Millius 98216 2001 Danyal S Hassan 94943 1925