The summoner name or tag is incorrect
dolomer #0001
GOLD III
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Match History for Patch: 16.10.1
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Champion Stats for Patch: 16.10.1
Champion Mastery
lvl: 9
65,456
lvl: 8
54,805
lvl: 8
54,140
lvl: 7
51,035
lvl: 7
46,299
lvl: 7
43,394
lvl: 6
42,029
lvl: 5
31,135
lvl: 5
29,582
lvl: 5
29,501
lvl: 5
29,456
lvl: 5
28,942