The summoner name or tag is incorrect
dimsum #8035
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: 12
107,237
lvl: 11
97,483
lvl: 11
91,526
lvl: 11
90,563
lvl: 9
69,282
lvl: 8
55,775
lvl: 7
52,312
lvl: 7
50,823
lvl: 7
43,819
lvl: 7
43,211
lvl: 6
42,429
lvl: 6
36,208