The summoner name or tag is incorrect
jar #9722
SILVER III
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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: 26
255,600
lvl: 13
113,057
lvl: 12
106,238
lvl: 12
102,386
lvl: 10
79,440
lvl: 9
74,570
lvl: 9
67,053
lvl: 9
66,243
lvl: 8
61,766
lvl: 8
61,587
lvl: 7
50,553
lvl: 7
48,873