The summoner name or tag is incorrect
rig #7777
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: 33
336,561
lvl: 25
250,467
lvl: 15
132,488
lvl: 10
85,453
lvl: 10
76,338
lvl: 6
39,243
lvl: 5
27,937
lvl: 5
24,974
lvl: 5
24,269
lvl: 5
23,857
lvl: 5
23,466
lvl: 5
23,143