The summoner name or tag is incorrect
dinguscringus #0666
PLATINUM 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: 13
116,501
lvl: 12
98,943
lvl: 12
107,201
lvl: 10
83,388
lvl: 10
75,840
lvl: 9
76,393
lvl: 9
69,561
lvl: 8
67,695
lvl: 8
54,226
lvl: 7
49,096
lvl: 7
46,914
lvl: 7
45,303