The summoner name or tag is incorrect
svrine #1243
SILVER II
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Match History for Patch: 16.4.1
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Champion Stats for Patch: 16.4.1
Champion Mastery
lvl: 42
464,266
lvl: 20
188,812
lvl: 19
209,955
lvl: 19
183,345
lvl: 12
103,035
lvl: 10
83,041
lvl: 10
78,176
lvl: 10
103,313
lvl: 9
80,686
lvl: 9
75,395
lvl: 9
73,298
lvl: 9
67,678