The summoner name or tag is incorrect
splinter #001
BRONZE I
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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
164,246
lvl: 13
113,011
lvl: 11
87,635
lvl: 6
33,273
lvl: 5
30,210
lvl: 5
29,633
lvl: 5
27,197
lvl: 5
21,947
lvl: 4
18,736
lvl: 4
17,526
lvl: 4
13,991
lvl: 4
13,397