The summoner name or tag is incorrect
dib #3453
SILVER II
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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: 8
61,117
lvl: 8
57,891
lvl: 7
48,579
lvl: 6
37,849
lvl: 6
33,920
lvl: 5
30,543
lvl: 5
28,450
lvl: 5
28,219
lvl: 4
20,862
lvl: 4
20,848
lvl: 4
20,023
lvl: 4
19,658