The summoner name or tag is incorrect
moose #2001
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: 8
57,294
lvl: 7
50,489
lvl: 7
48,589
lvl: 7
46,402
lvl: 6
36,073
lvl: 6
32,764
lvl: 5
25,912
lvl: 5
25,066
lvl: 5
24,730
lvl: 5
23,100
lvl: 4
13,069
lvl: 4
12,967