The summoner name or tag is incorrect
yoha #br123
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: 46
491,706
lvl: 14
126,169
lvl: 10
80,189
lvl: 9
73,845
lvl: 8
60,885
lvl: 8
56,822
lvl: 7
47,007
lvl: 7
42,920
lvl: 6
39,904
lvl: 6
39,001
lvl: 6
38,260
lvl: 6
37,219