Find the teammate who raises your win rate.
Pick a champion and role to scan the partners who measurably bump its win rate — or rate a full team comp's combined synergy. Real ranked duo data, 100-game floor per pair.
About Champion Synergy
Champion Synergy is YordleDiff's free tool for finding the teammates that measurably raise your champion's win rate in League of Legends. Pick your champion and role, and the tool returns the best teammates per ally role — ranked by their real win-rate delta over your champion's solo performance. You can also rate a full five-champion comp to see which pairs are pulling weight and which are dragging the team down. If you duo, use this before you queue. If you 5-stack, drop into the Team Builder for the full draft view.
How is champion synergy calculated?
methodologyThe metric is simple: for each champion pair, take the pair's win rate and subtract the focus champion's solo win rate. A positive delta means the pair wins more often together than the champion does on average. Pairs need at least 100 sampled ranked Emerald+ games on the current patch to be included — otherwise the number is just noise.
What rank do the synergy stats come from?
data sourceRanked Emerald+ games on the current patch (16.11). The 100-game floor per pair filters out small-sample flukes. Numbers update with each patch refresh.
Is YordleDiff free?
pricingYes. Champion Synergy and every other tool on the site are currently free to use, with no login or signup needed. Everything is computed in your browser — nothing you enter is uploaded.
Can I rate my whole team's synergy?
team modeYes. Switch to the Team Synergy tab and pick five champions across the five roles. The tool sums each ally pair's delta into a single team score and lists the strongest and weakest pairs so you can see which combinations are carrying the comp.