The summoner name or tag is incorrect
lebron #6215
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: 9
71,787
lvl: 6
33,843
lvl: 5
25,687
lvl: 4
18,463
lvl: 4
18,243
lvl: 4
18,143
lvl: 4
17,729
lvl: 4
17,322
lvl: 4
16,361
lvl: 4
15,653
lvl: 4
13,188
lvl: 4
12,613