The summoner name or tag is incorrect
lostname #2840
SILVER I
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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: 37
398,259
lvl: 20
241,453
lvl: 12
133,222
lvl: 9
65,511
lvl: 6
35,765
lvl: 5
26,848
lvl: 5
26,017
lvl: 5
21,774
lvl: 4
19,279
lvl: 4
18,690
lvl: 4
16,205
lvl: 4
15,666