The summoner name or tag is incorrect
execmajor #8439
SILVER IV
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Match History for Patch: 16.9.1
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Champion Stats for Patch: 16.9.1
Champion Mastery
lvl: 14
122,705
lvl: 12
107,146
lvl: 11
93,475
lvl: 9
80,178
lvl: 9
74,538
lvl: 8
64,062
lvl: 8
60,585
lvl: 8
53,666
lvl: 7
47,847
lvl: 7
45,476
lvl: 7
44,257
lvl: 6
40,178