The summoner name or tag is incorrect
kibble #69420
SILVER III
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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: 14
121,295
lvl: 11
89,929
lvl: 10
82,409
lvl: 9
65,182
lvl: 7
47,806
lvl: 7
45,020
lvl: 7
44,810
lvl: 7
42,947
lvl: 6
39,704
lvl: 6
36,918
lvl: 6
35,538
lvl: 5
28,948