The summoner name or tag is incorrect
atomic #129
SILVER I
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Match History for Patch: 16.4.1
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Champion Stats for Patch: 16.4.1
Champion Mastery
lvl: 47
505,487
lvl: 21
210,855
lvl: 13
109,011
lvl: 8
61,539
lvl: 6
34,845
lvl: 5
23,765
lvl: 5
22,947
lvl: 5
22,405
lvl: 4
21,582
lvl: 4
21,050
lvl: 4
20,630
lvl: 4
19,981