The summoner name or tag is incorrect
PLATINUM I
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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: 118
1,324,763
lvl: 27
280,152
lvl: 26
259,404
lvl: 21
249,391
lvl: 20
192,037
lvl: 20
191,329
lvl: 17
163,293
lvl: 13
119,155
lvl: 13
113,770
lvl: 13
109,975
lvl: 12
106,947
lvl: 12
106,562