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

Katarina

Champion 2

Sion

50.3%

Katarina win rate vs Sion

Skill matchup — could go either way

173

Games Analyzed

50.3%

Katarina WR

49.7%

Sion WR

+23

Avg Gold Diff @15

Power Spike Timeline

Katarina Level 3

Katarina Level 6

Sion Level 6

Katarina 1 item

Sion 1 item

Sion Infinite HP

How to Play This Matchup

Power Curve

Katarina is strongest mid game while Sion peaks late game. Play around your power window.

Mixed Resistances

Katarina deals Mixed damage while Sion deals AD. Build resistances accordingly Ã¢â‚¬â€ don't stack the wrong type.

Hit and Run

Katarina needs to combo and back off. Don't stay in extended trades against Sion's sustained damage. Short trades, then disengage.

Exploit Sion's Weakness

Sion's main weakness: Dodging Q, mobile champs, % HP damage. Play around this to maximize your advantage.

Katarina Win Condition

Roam, get resets, snowball through kills

Sion Win Condition

Infinite HP scaling, R engage, zombie passive

Kill Pressure vs Map Play

Katarina typically runs Ignite for kill pressure. Sion runs Teleport for map impact. Katarina needs to convert the combat advantage into kills before Sion outscales through TP plays.