The summoner name or tag is incorrect
bestosuplayer #na1
EMERALD II
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Match History for Patch: 16.10.1
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Champion Stats for Patch: 16.10.1
Champion Mastery
lvl: 45
461,033
lvl: 16
150,022
lvl: 10
83,303
lvl: 10
77,051
lvl: 9
67,766
lvl: 8
59,719
lvl: 7
47,240
lvl: 6
32,944
lvl: 6
32,656
lvl: 4
20,437
lvl: 4
13,805
lvl: 3
8,492