Where Challengers ward, this exact matchup.
Pick your support, your side, and the enemy support and jungler. The coach surfaces the ward zones supports actually placed in those games — grouped by drake setup, lane safety, baron prep, and deep vision, with win-rate delta on every spot.
About the Warding Coach
The Warding Coach is YordleDiff's free vision tool for League of Legends supports. Pick your support, your side of the map, and (optionally) the enemy support and jungler — the coach surfaces the named ward zones where Challenger and Emerald+ supports actually placed wards in those games, grouped by what the ward sets up: drake setup, lane phase safety, baron prep, and deep vision. Every zone shows the win-rate delta over your support's baseline, the sample count behind that number, and the matchup tier the data came from.
If you want the vision plan to inform a wider draft, drop the same picks into the Team Builder and the Warding Coach runs alongside bans, builds, runes, and win conditions.
How does the Warding Coach work?
Pick your support, your side of the map, and the enemy support and jungler. The coach cascades through matchup tiers — exact matchup first, falling back to broader pools when sample density is thin — and surfaces the named ward zones where Challenger supports actually placed wards in those games, grouped by objective context (drake setup, lane safety, baron prep, deep vision).
Where does the ward data come from?
450,180 real ward placements from 207,578 Emerald+ ranked games on patch 16.10, processed through a clustering pipeline that auto-discovered 70 named ward zones across both sides of the Rift — Dragon Pit, Baron Pit, Bot Tribush, Blue Buff, Raptors, Gromp, and so on. Every spot card shows the win-rate delta, sample count, and the matchup tier the data came from.
How precise are the ward positions?
Position fidelity is currently zone-level — which named area on the map, not pixel coordinates. That's the same level of granularity a coach uses when calling out wards in scrim review. A spectator-data upgrade for pixel-precise placements is on the roadmap pending a Riot production API key.
Is YordleDiff free?
Yes. The Warding Coach and every other tool on the site are free, with no login, no signup, and no Riot account required. Everything runs in your browser — nothing you enter is uploaded.