The summoner name or tag is incorrect
lob #7672
SILVER IV
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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: 19
181,514
lvl: 14
128,585
lvl: 12
105,772
lvl: 12
100,488
lvl: 11
86,641
lvl: 9
74,030
lvl: 9
72,909
lvl: 9
72,713
lvl: 9
65,168
lvl: 8
57,678
lvl: 7
50,149
lvl: 7
48,510