Event Details:   Groningen, 1989  
   Start Date:    December, 1989
   Finish Date:    -
   Event Type:    Tournament
 Player Name   Rating on December 1989 list   Predicted Results vs Rated Opponents   Age 
 Ian Rogers   2594 (#190 on December 1989 list)   4.6/9, 51%   29y6m 
 Viswanathan Anand   2653 (#67 on December 1989 list)   5.3/9, 58%   20y0m 
 Joris Brenninkmeijer   2517 (#475 on December 1989 list)   3.7/9, 41%   20y3m 
 Jeroen Piket   2595 (#182 on December 1989 list)   4.6/9, 51%   20y11m 
 Vassily Smyslov   2648 (#72 on December 1989 list)   5.2/9, 58%   68y9m 
 Zurab Azmaiparashvili   2716 (#13 on December 1989 list)   6/9, 67%   29y9m 
 Ferdinand Hellers   2600 (#162 on December 1989 list)   4.6/9, 51%   20y11m 
 Vasil Spasov   2478 (#698 on December 1989 list)   3.2/9, 36%   18y10m 
 Marinus Kuijf   2542 (#361 on December 1989 list)   3.9/9, 44%   29y10m 
 Slobodan Martinovic   2543 (#356 on December 1989 list)   4/9, 44%   44y5m 
 
 Player Name   Overall Results   Actual Results vs Rated Opponents   Performance Rating   Results +/- Predicted 
 Ian Rogers   +4 (6.5/9, 72%)   +4 (6.5/9, 72%) vs 2588-rated opposition   2683   +1.9 
 Viswanathan Anand   +2 (5.5/9, 61%)   +2 (5.5/9, 61%) vs 2581-rated opposition   2625   +0.2 
 Joris Brenninkmeijer   +1 (5/9, 56%)   +1 (5/9, 56%) vs 2596-rated opposition   2610   +1.3 
 Jeroen Piket   +1 (5/9, 56%)   +1 (5/9, 56%) vs 2588-rated opposition   2603   +0.4 
 Vassily Smyslov   +1 (5/9, 56%)   +1 (5/9, 56%) vs 2582-rated opposition   2599   -0.2 
 Zurab Azmaiparashvili   +1 (5/9, 56%)   +1 (5/9, 56%) vs 2574-rated opposition   2593   -1.0 
 Ferdinand Hellers   = (4.5/9, 50%)   = (4.5/9, 50%) vs 2587-rated opposition   2576   -0.1 
 Vasil Spasov   -1 (4/9, 44%)   -1 (4/9, 44%) vs 2601-rated opposition   2561   +0.8 
 Marinus Kuijf   -2 (3.5/9, 39%)   -2 (3.5/9, 39%) vs 2594-rated opposition   2529   -0.4 
 Slobodan Martinovic   -7 (1/9, 11%)   -7 (1/9, 11%) vs 2594-rated opposition   2396   -3.0