The summoner name or tag is incorrect
booploo #valid
DIAMOND II
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Match History for Patch: 16.4.1
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Champion Stats for Patch: 16.4.1
Champion Mastery
lvl: 49
631,690
lvl: 33
372,735
lvl: 16
190,594
lvl: 14
126,523
lvl: 10
92,480
lvl: 7
51,703
lvl: 5
31,447
lvl: 5
29,354
lvl: 5
27,525
lvl: 5
27,011
lvl: 4
21,274
lvl: 4
13,661