The summoner name or tag is incorrect
grim #5503
IRON 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: 8
58,393
lvl: 7
53,122
lvl: 3
8,281
lvl: 3
7,344
lvl: 3
7,137
lvl: 3
7,092
lvl: 2
3,150
lvl: 1
941
lvl: 1
569
lvl: 1
555
lvl: 1
493
lvl: 1
478