The summoner name or tag is incorrect
squimpy #333
SILVER IV
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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: 17
156,950
lvl: 14
124,398
lvl: 12
99,529
lvl: 12
106,009
lvl: 11
92,243
lvl: 9
69,071
lvl: 8
60,068
lvl: 8
57,460
lvl: 7
51,885
lvl: 7
51,282
lvl: 6
41,899
lvl: 6
41,658