The summoner name or tag is incorrect
avel #abc
SILVER I
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Match History for Patch: 16.9.1
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Champion Stats for Patch: 16.9.1
Champion Mastery
lvl: 14
139,070
lvl: 11
100,317
lvl: 10
77,134
lvl: 10
75,816
lvl: 8
63,971
lvl: 8
63,905
lvl: 8
60,834
lvl: 7
53,299
lvl: 7
52,143
lvl: 7
50,662
lvl: 7
50,386
lvl: 7
50,340