The summoner name or tag is incorrect
katon #7261
EMERALD IV
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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: 17
154,457
lvl: 13
109,077
lvl: 7
45,760
lvl: 6
31,997
lvl: 6
31,868
lvl: 5
29,950
lvl: 5
28,058
lvl: 5
27,670
lvl: 5
23,987
lvl: 5
22,983
lvl: 4
20,572
lvl: 4
17,931