The summoner name or tag is incorrect
dusclops #8842
SILVER IV
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Match History for Patch: 16.10.1
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Champion Stats for Patch: 16.10.1
Champion Mastery
lvl: 36
418,352
lvl: 14
123,435
lvl: 11
108,999
lvl: 10
94,458
lvl: 10
79,353
lvl: 9
73,462
lvl: 9
73,068
lvl: 9
72,630
lvl: 9
72,000
lvl: 9
71,794
lvl: 9
69,327
lvl: 8
60,577