The summoner name or tag is incorrect
pookie #beer
SILVER I
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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: 24
238,216
lvl: 9
69,854
lvl: 8
61,705
lvl: 8
54,354
lvl: 7
49,400
lvl: 7
48,933
lvl: 7
48,594
lvl: 7
48,363
lvl: 7
47,965
lvl: 7
46,803
lvl: 7
43,833
lvl: 7
43,800