The summoner name or tag is incorrect
plaven #cvs
GOLD III
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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: 69
728,752
lvl: 39
397,136
lvl: 25
263,850
lvl: 25
259,219
lvl: 23
227,647
lvl: 18
174,308
lvl: 17
160,416
lvl: 16
174,402
lvl: 16
148,047
lvl: 15
189,408
lvl: 14
167,278
lvl: 14
127,832