The summoner name or tag is incorrect
salem #2424
SILVER II
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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: 22
255,258
lvl: 11
145,359
lvl: 10
85,990
lvl: 10
79,169
lvl: 9
70,247
lvl: 8
73,792
lvl: 8
62,263
lvl: 8
55,609
lvl: 7
47,139
lvl: 7
46,793
lvl: 6
41,270
lvl: 6
40,363