Monthly record of oyabunsan's rank (dan/kyu)
month dan/kyu win/lose win ratio
2014 /06 7.00 Kyu 3 win 2 lose .600
2014 /05 1.83 Kyu 18 win 21 lose .461
2014 /04 3.00 Kyu 7 win 5 lose .583
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