The summoner name or tag is incorrect
mtj #42558
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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: 12
99,700
lvl: 12
101,439
lvl: 9
74,465
lvl: 6
35,990
lvl: 5
29,132
lvl: 5
22,722
lvl: 4
18,549
lvl: 4
17,889
lvl: 4
17,724
lvl: 4
16,558
lvl: 4
16,388
lvl: 4
14,721