The summoner name or tag is incorrect
kancel #8999
SILVER III
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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: 7
49,198
lvl: 7
46,836
lvl: 7
46,365
lvl: 6
41,222
lvl: 6
37,594
lvl: 6
36,860
lvl: 5
31,183
lvl: 5
28,692
lvl: 5
25,427
lvl: 5
22,408
lvl: 4
19,560
lvl: 4
19,160