The summoner name or tag is incorrect
aternox #0000
BRONZE II
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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
139,088
lvl: 15
131,405
lvl: 14
125,919
lvl: 8
63,151
lvl: 7
52,675
lvl: 7
51,221
lvl: 7
48,667
lvl: 7
45,547
lvl: 7
43,870
lvl: 6
42,475
lvl: 6
42,245
lvl: 6
40,943