The summoner name or tag is incorrect
hellshell #na1
EMERALD 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: 40
407,044
lvl: 10
102,644
lvl: 9
71,155
lvl: 7
43,603
lvl: 6
41,628
lvl: 6
39,740
lvl: 6
38,900
lvl: 5
25,976
lvl: 4
22,898
lvl: 4
18,270
lvl: 4
15,594
lvl: 4
15,313