The summoner name or tag is incorrect
lv99roidmage #na1
SILVER III
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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: 21
206,742
lvl: 19
174,711
lvl: 13
118,718
lvl: 11
92,737
lvl: 10
82,610
lvl: 9
67,822
lvl: 8
63,888
lvl: 8
60,515
lvl: 8
59,870
lvl: 7
49,556
lvl: 7
46,435
lvl: 7
44,733