The summoner name or tag is incorrect
panther #3580
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: 8
57,446
lvl: 7
51,303
lvl: 7
46,291
lvl: 6
41,387
lvl: 6
41,266
lvl: 6
39,230
lvl: 6
32,499
lvl: 5
25,811
lvl: 5
24,253
lvl: 5
23,087
lvl: 4
21,288
lvl: 4
21,087