Individual Calculations April 2024
 Roebuck, Derek J  Total change: -55.60  Rating chartPersonal card
 2024 Mary Thomson Cup Div B Rounds 5-7 plus postponed Perth AUS 2024-02-28
RcRownchangeKK*chgGame
 1674 1568 2.50 4 1.04 20 20.80 
  Balavignan, Ashvin 1407 AUS0.501-0.2120-4.20 
  Leonhardt, Wolfgang 1753 AUS0.5010.24204.80 
  De Yaak, Peter 1798 AUS1.0010.792015.80 
  Janceski, Alex 1737 AUS0.5010.22204.40 

Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change)
 
 2024 Metro Club Championship A-Division Rounds 5-8 Perth AUS 2024-02-29
RcRownchangeKK*chgGame
 1845 1568 0.50 4 -0.34 20 -6.80 
  Ferozkohi, Ihsan 2151 AUS0.001-0.0220-0.40 
  Ellis, David 1764 AUS0.001-0.2520-5.00 
  De Vas, Saminda 1746 AUS0.5010.23204.60 
  Baumgartner, Robert 1717 AUS0.001-0.3020-6.00 

Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change)
 
 2024 Perth International Open Perth AUS 2024-03-01
RcRownchangeKK*chgGame
 1717 1748 0.50 6 -2.79 20 -55.80 
  Spirin, Victor 2022 RUS0.001-0.1720-3.40 
  De Jong, Sjef 1623 AUS0.501-0.1720-3.40 
  Moseley, Paul 1623 AUS0.001-0.6720-13.40 
  Baines-Dell, Maxwell 1644 AUS0.001-0.6420-12.80 
  Kerr, Carter 1719 AUS0.001-0.5420-10.80 
  Kerr, Lennon 1672 AUS0.001-0.6020-12.00 

Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change)
 
 2024 Southern Suburbs Open Rounds 4-6 Perth AUS 2024-03-05
RcRownchangeKK*chgGame
 1678 1748 0.50 2 -0.69 20 -13.80 
  Taylor, Noah 1758 AUS0.001-0.4920-9.80 
  Sheridan, Wallace 1598 AUS0.501-0.2020-4.00 

Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change)
 

 

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