The summoner name or tag is incorrect
vanitas #0228
PLATINUM III
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Match History for Patch: 16.9.1
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Champion Stats for Patch: 16.9.1
Champion Mastery
lvl: 110
1,218,793
lvl: 37
373,111
lvl: 20
191,790
lvl: 17
154,635
lvl: 16
144,746
lvl: 14
129,671
lvl: 14
121,222
lvl: 12
112,591
lvl: 11
90,830
lvl: 10
78,185
lvl: 9
73,393
lvl: 9
68,752