- Win Rate
- 49.3%
- Pick Rate
- 2.9%
- Ban Rate
- 6.2%
Katarina vs Diana
- Patch
- 26.20
- Games
- 3,799
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 12, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Katarina vs Diana is a decisive matchup in LoL patch 26.20. Katarina wins with a 58.8% win rate (+17.5%) over Diana based on 80 games. Diana wins the early laning phase while Katarina scales better into the late game. Below you'll find the best Katarina build, runes, laning stats, and strategies for the Katarina vs Diana matchup.
Katarina Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Katarina performs against them. You'll get head-to-head win rates, laning stats, the best build and runes for the matchup, and early vs late game analysis — all based on real ranked data.
Who wins Katarina vs Diana?
Katarina wins 59.7% of these games. With this many games the true rate is most likely between 48.6% and 70.0% (95% range).
- Expected
- 50.6% From both champions' overall Mid win rates
- Matchup effect
- +9.1 pts Observed minus expected
- Sample
- 77 games Lane: Mid
- vs patch 26.19
- +13.9 pts Within normal patch-to-patch noise
Lane: Mid · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.20 · Oct 10 – Oct 11
Key takeaways
- Current data slightly favors Katarina, but the sample is too limited for a strong conclusion: Katarina wins 59.7% of 77 games (95% range 48.6–70.0%).
- Both champions' overall Mid win rates predict 50.6% for Katarina; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Diana usually wins the lane: 785 gold ahead of Katarina at 15 minutes on average (77 games with a 15-minute snapshot).
- Katarina players pick Bone Plating far more often against Diana: 10.9% of their other Mid games, 18.2% here.
How we calculate this
Games: ranked Solo/Duo and Flex games on the North America server from the patch shown. Remakes (games under 5 minutes) are excluded.
A game only counts when Katarina and Diana played the same position on opposite teams, so roaming, lane swaps within a team or a champion merely being in the same game never count as this matchup.
The 95% range is a Wilson score interval. Confidence comes from how wide that range is: within ±3 points is very high, ±5 high, ±8 moderate, anything wider low. Below 20 games a matchup is not classified at all.
Expected win rate combines both champions’ win rates in this lane (same games and filters) with the log5 formula: E = A(1−B) / (A(1−B) + B(1−A)). Matchup effect = observed − expected.
"What changes" compares Katarina's choices in this matchup with the same champion's other games in the same lane, and lists a change only when it is at least 3 points and statistically significant (two-proportion z-test, |z| ≥ 2, 20+ games).
Results are not split by rank: the sample per rank is too small for honest per-rank matchup numbers.
Katarina vs Diana Laning Stats
At 15 minutes
Whole-game averages
Katarina vs Diana Win Rate by Game Length
Katarina's win rate against Diana by game length. The dot is the win rate, the bar its 95% range and the dashed line the champion's usual win rate at that length. Lengths with fewer than 25 games are left blank.
No game length stands out: Katarina's results against Diana in short and long games are within the margin of error of each other.
Katarina vs Diana Power Spikes
Who is ahead at each stage, measured from these games. A stage reads "Even" when the difference is inside the margin of error, and "Insufficient data" when there are too few games to tell.
- Lane (15 min)DianaKatarina gold at 15: −785
- First itemEvenKatarina: 10.7 min · Diana: 10.5 min
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Katarina Changes Against Diana
Choices Katarina players make noticeably more or less often in this matchup than in their other Mid games.
Bone PlatingRuneUsually10.9%vs Diana18.2%+7.3 pts
Usually9.4%vs Diana2.6%−6.8 pts
Tenacity and Slow Resist (defense)Stat shardUsually4.1%vs Diana9.1%+5.0 pts
Treasure HunterRuneUsually3.4%vs Diana7.8%+4.4 pts
Best Katarina Build vs Diana
Usual Katarina build (Mid)
74.4% win rate · 39 games
Against Diana
Not enough matchup-specific build data: only 12 of 48 Katarina games against Diana carried a complete build, which is too few to recommend an item path from. Use Katarina's standard build instead.
- Katarina usually completes Lich Bane first, at 10.7 min (median of 31 games).
- Diana usually completes Stormsurge first, at 10.5 min (median of 50 games).
- Skill priority: Q > E > W — the same as usual.
Builds are ranked by the lower edge of their win rate range, not the raw win rate, so a build seen in a handful of wins never outranks a proven one.
Best Katarina Runes vs Diana
Usual Katarina runes (Mid)
Conqueror
78.9% win rate · 19 games
Against Diana
Electrocute
69.2% win rate · 26 games
Plan your Katarina draft in Draft Lab
Draft Lab lays out both teams lane by lane with live matchup win rates, damage profiles and game-phase lean, and suggests picks and bans from current meta data.
- Full 5v5 draft board
- Lane matchup win rates
- Pick and ban suggestions
Katarina matchup data for League of Legends patch 26.20. The table below shows Katarina's win rate, gold difference, and performance stats against every champion in the current meta. Click any champion name to see a detailed head-to-head breakdown including the best Katarina build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Katarina Matchups
Hardest for Katarina
Easiest for Katarina
Win rate and games for each matchup. Lists are ranked by the edge of the 95% range so small samples cannot top them; matchups with at least 50 games only.
Help us maintain accuracy! If you notice incorrect stats, missing data, or any issues, your feedback directly improves the quality of our data for the entire community.
Katarina vs Diana FAQ - Patch 26.20
Who wins Katarina vs Diana?
Current data slightly favors Katarina, but the sample is too limited for a strong conclusion: Katarina wins 59.7% of 77 games (95% range 48.6–70.0%).
What is Katarina's win rate against Diana?
Katarina wins 59.7% of 77 Mid games against Diana on patch 26.20 (95% range 48.6–70.0%). Based on both champions' overall Mid win rates, 50.6% would be expected.
Does Katarina counter Diana?
Not clearly. Katarina wins 59.7% of 77 games against Diana, and the 95% range (48.6–70.0%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Katarina or Diana?
Diana usually wins the lane: 785 gold ahead of Katarina at 15 minutes on average (77 games with a 15-minute snapshot).
Does Katarina outscale Diana?
There are too few games of each length to tell yet.
When is Diana strongest against Katarina?
Diana is measurably ahead in: Lane (15 min).
What should Katarina build against Diana?
There are not enough games for a matchup-specific core, so use Katarina's usual Mid core: Shadowflame, Lich Bane, Mejai's Soulstealer. The biggest change against Diana: Mejai's Soulstealer (9.4% usually, 2.6% here).
What runes should Katarina use against Diana?
Electrocute with Domination and Precision — 69.2% over 26 games against Diana. The biggest change against Diana: Bone Plating (10.9% usually, 18.2% here).