The summoner name or tag is incorrect
runnerchild #na1
GOLD 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: 20
198,947
lvl: 19
182,780
lvl: 13
110,046
lvl: 12
98,078
lvl: 12
140,247
lvl: 12
107,423
lvl: 11
111,150
lvl: 10
82,465
lvl: 10
81,487
lvl: 9
73,388
lvl: 9
72,458
lvl: 9
71,069