The summoner name or tag is incorrect
dusted #001
SILVER I
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Match History for Patch: 16.9.1
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Champion Stats for Patch: 16.9.1
Champion Mastery
lvl: 63
880,578
lvl: 13
114,033
lvl: 4
18,738
lvl: 4
14,215
lvl: 3
8,033
lvl: 2
3,399
lvl: 2
2,240
lvl: 2
2,233
lvl: 1
981
lvl: 1
971
lvl: 1
810
lvl: 1
499