How are champion matchup win rates calculated?

Win rates are calculated from thousands of ranked games in Emerald+ elo on the current patch. Data is sourced from OP.GG and updated regularly.

What does a 55% win rate matchup mean?

A 55% win rate means Champion 1 wins 55 out of every 100 games against Champion 2 in ranked. Anything above 52% is considered a favorable matchup.

Do matchup win rates change every patch?

Yes. Champion buffs, nerfs, item changes, and meta shifts can all affect matchup win rates. Our data updates with each new patch.

Should I always pick the counter champion?

Not necessarily. Comfort and experience on a champion often matter more than counter-picking, especially below Diamond. A 2-3% win rate difference is easily overcome by champion mastery.

What rank is the matchup data from?

All matchup data is sourced from Emerald+ ranked games to ensure the data reflects skilled play. Lower elo matchups can differ significantly.

Patch 26.9 Data

Champion Matchups

Pick two champions and see who wins. Win rates, counters, and tips powered by live ranked data.

Champion 1

Janna

Champion 2

Senna

48.1%

Janna win rate vs Senna

Skill matchup — could go either way

2,014

Games Analyzed

48.1%

Janna WR

51.9%

Senna WR

-151

Avg Gold Diff @15

Power Spike Timeline

Senna Level 1

Janna Level 2

Janna Level 6

Janna 1 item

Senna 1 item

Senna Infinite scaling

How to Play This Matchup

Power Curve

Janna is strongest mid game while Senna peaks late game. Play around your power window.

Mixed Resistances

Janna deals AP damage while Senna deals AD. Build resistances accordingly Ã¢â‚¬â€ don't stack the wrong type.

Exploit Janna's Weakness

Janna's main weakness: Hard engage, poke, low kill pressure. Play around this to maximize your advantage.

Janna Win Condition

Disengage with Q+R, shield ADC, peel for carries

Senna Win Condition

Stack souls for infinite range/crit, global R heal/damage

Recommended Items

Janna

Moonstone Renewer

Core

Build every game

Staff of Flowing Water

Core

Build every game

Redemption

Core

Build every game

Plated Steelcaps

Defensive

Armor boots vs Senna's AD damage

Bramble Vest

Counter

Grievous wounds + armor vs Senna's sustain/autos

Senna

Eclipse

Core

Build every game

Rapid Firecannon

Core

Build every game

Infinity Edge

Core

Build every game

Mercury's Treads

Defensive

MR + tenacity vs Janna's AP damage and CC

Hexdrinker

Counter

Magic damage shield vs Janna's burst

Janna's Worst Matchups

Senna's Worst Matchups

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