The summoner name or tag is incorrect
atomic #129
SILVER I
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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: 53
581,557
lvl: 22
213,066
lvl: 13
110,392
lvl: 8
62,560
lvl: 6
36,721
lvl: 5
29,880
lvl: 5
29,378
lvl: 5
26,509
lvl: 5
25,710
lvl: 5
24,841
lvl: 5
23,111
lvl: 5
22,399