The summoner name or tag is incorrect
12345 #7783
EMERALD IV
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Match History for Patch: 16.6.1
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Champion Stats for Patch: 16.6.1
Champion Mastery
lvl: 57
601,975
lvl: 39
410,216
lvl: 19
183,138
lvl: 10
84,447
lvl: 9
74,408
lvl: 8
53,654
lvl: 7
48,029
lvl: 6
41,468
lvl: 6
39,155
lvl: 6
32,433
lvl: 5
29,573
lvl: 5
28,400