The summoner name or tag is incorrect
amp #stone
PLATINUM III
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Match History for Patch: 16.9.1
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Champion Stats for Patch: 16.9.1
Champion Mastery
lvl: 10
86,242
lvl: 10
81,798
lvl: 8
59,362
lvl: 8
56,733
lvl: 7
51,511
lvl: 7
43,372
lvl: 6
40,767
lvl: 6
37,636
lvl: 6
36,493
lvl: 6
34,865
lvl: 6
34,519
lvl: 6
33,542