The summoner name or tag is incorrect
shadowmonarch #9536
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: 6
38,371
lvl: 5
31,177
lvl: 5
29,689
lvl: 4
19,826
lvl: 4
16,235
lvl: 4
14,800
lvl: 3
9,637
lvl: 3
9,282
lvl: 3
8,438
lvl: 3
7,639
lvl: 3
7,200
lvl: 3
6,803