Comparative rankings for WRC

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Comparative rankings remains an inexact science for evaluating mahjong populations, given the tools we have, and the changes in representative samples. The numbers here are produced from the results of the 2017 World Riichi Championship.

Ranking expressed as power points (PP)

As there is no official rankings by country available, the table below is presenting the best, average, median and worst scores, as well as a composite score (the average of all four). Players placing equally with another player are ranked as a half-rank lower, in order to maintain statistical comparability.

WRC 2014 Statistical averages based on player final rankings
Country Best Average Median Worst Composite
Poland 878.15 710.08 655.46 596.64 710.08
Japan † 1000 701.60 672.27 8.40 595.55
China 911.76 610.25 689.08 151.26 592.27
Denmark 844.54 589.66 657.56 218.49 577.56
Spain 563.03 563.03 563.03 563.03 563.03
Finland 827.73 533.61 647.06 126.05 533.61
Germany 810.92 485.71 428.57 201.68 481.68
United States ‡ 794.12 516.81 470.59 142.86 481.09
South Korea 445.38 445.38 445.38 445.38 445.38
France 731.09 451.34 411.76 176.47 442.69
Russia 613.45 436.97 432.77 268.91 437.98
United Kingdom 962.18 392.52 336.13 50.42 435.29
Singapore 638.66 415.97 415.97 193.28 415.97
Ukraine 352.94 352.94 352.94 352.94 352.94
Italy 319.33 319.33 319.33 319.33 319.33
Canada 252.10 252.10 252.10 252.10 252.10
Netherlands 478.99 226.89 226.89 42.02 243.70
Austria 327.73 228.99 243.70 100.84 233.70
Czech Republic 344.54 218.49 218.49 92.44 218.49
Australia 285.71 210.08 210.08 134.45 210.08
Slovakia 378.15 193.28 126.05 75.63 193.28
Sweden 184.87 176.47 176.47 168.07 176.47
Switzerland 67.23 67.23 67.23 67.23 67.23

Notes: † Japan's score is counting the four pros who retired as placing 116th though 119th. ‡ The United States is counted as having 8 participants, excluding a player who was unable to attend.

WRC 2017 Statistical averages based on player final rankings
Country Best Average Median Worst Composite Rank 4P+
Chile 659.19 659.19 659.19 659.19 659.19 01
Brazil 753.36 647.98 647.98 542.60 647.98 02
Hungary 641.26 641.26 641.26 641.26 641.26 03
Japan* 1000 681.70 746.64 107.62 634.04 04 01
Singapore 807.17 598.65 596.41 394.62 599.19 05 02
Ukraine 735.43 576.98 506.73 488.79 576.98 06
Finland* 905.83 520.18 493.27 165.92 521.30 07 03
Sweden 762.33 517.35 516.81 273.54 517.53 08 04
China 609.87 511.21 538.12 430.49 511.21 09
United Kingdom* 899.10 461.12 417.04 85.20 465.62 10 05
Austria* 973.09 411.07 376.68 44.84 451.08 11 06
Australia 663.68 437.22 437.22 210.76 437.22 12
Slovakia 798.21 129.75 412.56 67.26 425.16 13 07
Poland 695.07 411.79 401.35 161.43 417.40 14 08
Netherlands* 899.10 367.26 381.17 8.97 414.13 15 09
Russia 739.91 373.32 273.54 206.28 398.25 16 10
United States* 887.89 371.48 300.45 4.48 391.08 17 11
Denmark 726.46 400.76 392.38 22.42 385.52 18 12
France 816.14 336.59 346.41 31.39 382.65 19 13
Argentina 466.37 316.91 448.43 35.87 316.91 20
Germany 650.22 194.75 89.69 13.45 237.04 21 14
Norway 156.95 156.95 156.95 156.95 156.95 22
Canada 121.08 89.69 89.69 58.30 89.69 23
Iran 40.36 40.36 40.36 40.36 40.36 24
Mexico 0 0 0 0 0 25

Note: The ranking columns are presented with two sets of information: one being for ranking all countries, the other for ranking countries with 4 or more players participating (4P+).

Differential

Differential between 2014 and 2017
Country Best Average Median Worst Composite 4+?
Sweden +577.46 +340.88 +340.34 +105.47 +341.06
Australia [+227] No
Slovakia +420.06 -63.53 +286.51 -8.37 +231.88
Ukraine +382.49 +224.04 +153.79 +135.85 +224.04
Singapore +168.51 +182.68 +180.44 +201.34 +183.22
Netherlands* [+170] Yes
Austria* [+117] Yes
Japan* [0] [-20] [+74] [+99] [+39] Yes
United Kingdom* [-63] [+69] [+81] [+35] [+30] Yes
Finland* [+78] [-13] [-154] [+40] [-12]
Russia +126.46 -63.65 -159.23 -62.63 -39.73 Yes
France +85.05 -114.75 -65.35 -145.08 -60.04 Yes
China -302.89 -99.04 -150.96 +279.23 -81.06
United States* [94] [-145] [-170] [-138] [-90] Yes
Canada -131.02 -162.41 -162.41 -193.80 -162.41 No
Denmark -118.08 -188.90 -265.18 -196.07 -192.04 Yes
Germany -160.70 -290.96 -338.88 -188.23 -244.64 Yes
Poland -183.08 -298.29 -254.09 435.21 -293.68

Notes:
The following countries are not listed, sorted by single-event results: Chile (659), Brazil (648), Hungary (641), Spain (563), South Korea (445), Italy (319), Argentina (317), Czech Republic (218), Norway (157), Switzerland (67), Iran (40), Mexico (0).