Kai'Sa vs Amumu

Rank	Win Rate	Amumu wins50 %Kai'Sa wins	Games
Iron	too few games		3
Bronze	too few games		15
Silver	too few games		18
Gold	too few games		17
Platinum	too few games		26
Emerald	too few games		20
Diamond	too few games		11
Master	too few games		3
Grandmaster	too few games		—
Challenger	too few games		—

Rows count games as played (113 in all). The head weights each rank by its real share of ranked players (136 weighted games), so the rows do not add up to it. Patch 26.21: 91 games, too few for a win rate Games from patch 26.19 to 26.21