The summoner name or tag is incorrect
style #cat
SILVER I
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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: 21
206,942
lvl: 14
129,920
lvl: 9
73,691
lvl: 9
66,709
lvl: 9
65,268
lvl: 8
63,683
lvl: 7
53,079
lvl: 7
48,406
lvl: 7
48,245
lvl: 7
43,896
lvl: 7
43,124
lvl: 6
41,125