The summoner name or tag is incorrect
lowercase #8895
GOLD 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: 16
141,927
lvl: 12
99,483
lvl: 9
71,653
lvl: 7
47,190
lvl: 7
46,029
lvl: 5
27,837
lvl: 4
15,371
lvl: 3
8,769
lvl: 3
8,073
lvl: 3
11,701
lvl: 2
4,211
lvl: 2
3,079