The summoner name or tag is incorrect
sirk #433
SILVER III
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Match History for Patch: 16.6.1
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Champion Stats for Patch: 16.6.1
Champion Mastery
lvl: 9
82,719
lvl: 9
71,056
lvl: 7
44,059
lvl: 7
39,351
lvl: 5
32,545
lvl: 5
26,103
lvl: 5
23,643
lvl: 4
26,612
lvl: 4
18,836
lvl: 4
17,337
lvl: 4
17,326
lvl: 4
16,493