The summoner name or tag is incorrect
driver #ltz
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: 2
3,028
lvl: 2
2,793
lvl: 2
2,053
lvl: 2
1,911
lvl: 1
749
lvl: 1
719
lvl: 1
436
lvl: 1
418
lvl: 1
368
lvl: 1
366
lvl: 1
341
lvl: 1
1,042