The summoner name or tag is incorrect
mac #9105
SILVER 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: 11
96,526
lvl: 11
90,174
lvl: 9
71,061
lvl: 8
62,424
lvl: 7
52,837
lvl: 7
51,664
lvl: 7
49,258
lvl: 7
48,930
lvl: 7
43,372
lvl: 6
37,728
lvl: 6
37,288
lvl: 6
37,086