The summoner name or tag is incorrect
hexcore #0001
SILVER 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: 62
794,244
lvl: 22
293,471
lvl: 22
213,018
lvl: 18
173,647
lvl: 13
112,735
lvl: 11
90,549
lvl: 10
79,215
lvl: 7
49,992
lvl: 6
53,158
lvl: 6
42,310
lvl: 6
42,051
lvl: 6
41,750