The summoner name or tag is incorrect
coffeemug #1234
BRONZE IV
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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: 15
136,668
lvl: 11
102,368
lvl: 9
66,867
lvl: 4
17,544
lvl: 3
9,855
lvl: 3
9,193
lvl: 3
8,396
lvl: 3
7,032
lvl: 3
6,601
lvl: 3
6,536
lvl: 3
6,514
lvl: 3
6,426