The summoner name or tag is incorrect
arkeinflies #na1
IRON I
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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: 33
412,459
lvl: 25
251,042
lvl: 14
130,549
lvl: 12
104,957
lvl: 10
112,395
lvl: 8
58,089
lvl: 7
43,230
lvl: 4
21,380
lvl: 4
18,509
lvl: 3
6,476
lvl: 3
11,440
lvl: 3
10,717