The summoner name or tag is incorrect
pup #7004
SILVER IV
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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
297,579
lvl: 25
247,135
lvl: 9
66,099
lvl: 8
64,520
lvl: 7
44,594
lvl: 7
43,254
lvl: 6
38,784
lvl: 6
32,420
lvl: 5
28,166
lvl: 5
27,552
lvl: 5
24,027
lvl: 5
22,683