Individual Calculations September 2010
 Zierk, Steven C  Total change: 5.70  Rating chartPersonal card
 Vassily Smyslov Memorial San Francisco, CA USA 2010-06-01
RcRownchangeKK*chgGame
 2298 2377 6.50 9 1.06 15 15.90 
  Sandberg, Evan M 2164 USA0.501-0.2715-4.05 
  Liou, Yian 2222 USA0.501-0.2115-3.15 
  De Guzman, Ricardo m2395 PHI0.5010.03150.45 
  Odondoo, Ganbold m2346 MGL1.0010.46156.90 
  Zavadsky, Peter 2275 SVK0.501-0.1415-2.10 
  Lobo, Richard C 2251 ENG1.0010.33154.95 
  Lee, Andy C f2302 USA1.0010.40156.00 
  Grefe, John A m2342 USA1.0010.45156.75 
  Naroditsky, Daniel f2381 USA0.5010.01150.15 

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)
 
 4th Annual Philadelphia International King of Prussia, Pennsylvania USA 2010-06-25
RcRownchangeKK*chgGame
 2356 2377 5.00 9 0.29 15 4.35 
  Paragua, Mark C g2497 PHI0.5010.16152.40 
  Simutowe, Amon S g2452 ZAM0.001-0.4015-6.00 
  Panchanathan, Magesh g2549 IND0.5010.23153.45 
  Aripov, Iskandar 2100 UZB1.0010.17152.55 
  Perez, Robert M 2212 USA1.0010.28154.20 
  Baquero, Luis A 2260 COL1.0010.34155.10 
  Bellaiche, Anthony m2442 FRA0.001-0.4115-6.15 
  Chen, Howard J 2276 USA1.0010.36155.40 
  Battaglini, Gabriel m2420 FRA0.001-0.4415-6.60 

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)
 
 38th Annual World Open - Open Section King of Prussia, Pennsylvania USA 2010-06-29
RcRownchangeKK*chgGame
 2301 2377 2.00 5 -0.93 15 -13.95 
  Potkin, Vladimir g2634 RUS0.001-0.1815-2.70 
  Harmon-Vellotti, Luke 2062 USA1.0010.14152.10 
  Tuhrim, Richard J 2101 USA1.0010.17152.55 
  Paragua, Mark C g2497 PHI0.001-0.3415-5.10 
  Mabe, Chris J 2209 USA0.001-0.7215-10.80 

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)
 
 2010 US Junior Championship St. Louis, Missouri USA 2010-07-10
RcRownchangeKK*chgGame
 2371 2385 4.50 9 -0.16 15 -2.40 
  Yang, Darwin f2396 USA0.001-0.4815-7.20 
  Rosen, Eric S 2179 USA1.0010.24153.60 
  Robson, Ray g2562 USA0.001-0.2715-4.05 
  Holt, Conrad f2402 USA1.0010.52157.80 
  Zhao, Parker B 2267 USA0.001-0.6615-9.90 
  Harper, Warren T f2304 USA1.0010.39155.85 
  Bryant, John Daniel f2403 USA0.001-0.4715-7.05 
  Shankland, Samuel m2513 USA0.5010.17152.55 
  Hughes, Tyler B 2312 USA1.0010.40156.00 

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)
 
 2010 Denker Tournament of High School Champions Irvine, California USA 2010-07-31
RcRownchangeKK*chgGame
 2143 2385 2.50 3 0.12 15 1.80 
  Guo, Alex 2121 USA1.0010.18152.70 
  Anzis, Matt 2071 USA0.501-0.3615-5.40 
  Zhang, Kevin 2236 USA1.0010.30154.50 

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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