The summoner name or tag is incorrect
MASTER I
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Match History for Patch: 16.6.1
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Champion Stats for Patch: 16.6.1
Champion Mastery
lvl: 76
1,118,628
lvl: 28
276,039
lvl: 18
195,674
lvl: 16
148,409
lvl: 16
141,613
lvl: 14
161,797
lvl: 12
104,071
lvl: 12
102,588
lvl: 10
77,195
lvl: 10
76,010
lvl: 9
71,982
lvl: 9
67,986