The summoner name or tag is incorrect
strange #whoo
SILVER 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: 30
302,045
lvl: 9
69,808
lvl: 8
56,937
lvl: 8
54,788
lvl: 7
53,136
lvl: 7
50,865
lvl: 7
48,692
lvl: 7
46,955
lvl: 7
45,041
lvl: 6
42,080
lvl: 6
36,645
lvl: 5
27,065