The summoner name or tag is incorrect
miami #100
EMERALD 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: 49
510,664
lvl: 34
343,518
lvl: 23
222,468
lvl: 22
211,993
lvl: 19
197,186
lvl: 14
121,856
lvl: 13
136,504
lvl: 13
115,726
lvl: 13
113,999
lvl: 12
105,484
lvl: 11
97,414
lvl: 11
86,760