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

Samira

Champion 2

Senna

47.1%

Samira win rate vs Senna

Senna has the edge

660

Games Analyzed

47.1%

Samira WR

52.9%

Senna WR

-230

Avg Gold Diff @15

Power Spike Timeline

Senna Level 1

Samira Level 2

Samira Level 6

Samira 1 item

Senna 1 item

Senna Infinite scaling

How to Play This Matchup

Power Curve

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

Armor Rush

Both champions deal physical damage. Whoever builds armor first (Plated Steelcaps, Bramble Vest) gets a huge advantage in trades.

Close the Gap

Senna will poke you down. You need to find an angle to all-in. Use bushes, minion waves, and flash aggressively. One good engage wins the lane.

Exploit Samira's Weakness

Samira's main weakness: Hard CC interrupts R, poke, can't build S rank without engage. Play around this to maximize your advantage.

Samira Win Condition

Build style rank to S, R for massive AoE lifesteal, snowball kills

Senna Win Condition

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

Recommended Items

Samira

Infinity Edge

Core

Build every game

Collector

Core

Build every game

Bloodthirster

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

Plated Steelcaps

Defensive

Armor boots vs Samira's AD damage

Bramble Vest

Counter

Grievous wounds + armor vs Samira's sustain/autos

Samira's Worst Matchups

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