- Win Rate
- 45.4%
- Pick Rate
- 0.7%
- Ban Rate
- 0.7%
Cassiopeia vs Orianna
- Patch
- 26.20
- Games
- 1,301
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 16, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Cassiopeia vs Orianna is a decisive matchup in LoL patch 26.20. Cassiopeia wins with a 63.2% win rate (+26.3%) over Orianna based on 19 games. Cassiopeia holds the advantage in both the early and late game. Below you'll find the best Cassiopeia build, runes, laning stats, and strategies for the Cassiopeia vs Orianna matchup.
Cassiopeia Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Cassiopeia 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 Cassiopeia vs Orianna?
Cassiopeia wins 58.8% of these games. With this many games the true rate is most likely between 36.0% and 78.4% (95% range).
- Expected
- 48.3% From both champions' overall Mid win rates
- Matchup effect
- +10.5 pts Observed minus expected
- Sample
- 17 games Lane: Mid
- vs patch 26.19
- — Not enough games on both patches
Lane: Mid · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.20 · Oct 10 – Oct 11
Key takeaways
- Only 17 Cassiopeia vs Orianna games were recorded in the Mid role on patch 26.20 — too few to say who is favored. Treat the numbers below as provisional.
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 Cassiopeia and Orianna 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 Cassiopeia'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.
Cassiopeia vs Orianna Laning Stats
Only 17 games have a 15-minute snapshot so far — the lane-phase numbers appear from 30.
Whole-game averages
Cassiopeia vs Orianna Win Rate by Game Length
Cassiopeia's win rate against Orianna 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: Cassiopeia's results against Orianna in short and long games are within the margin of error of each other.
Cassiopeia vs Orianna 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)Insufficient data
- First itemInsufficient data
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Cassiopeia Changes Against Orianna
Only 17 games so far — too few to compare what Cassiopeia players do in this matchup with their usual choices (needs 20).
Best Cassiopeia Build vs Orianna
Usual Cassiopeia build (Mid)
58.8% win rate · 85 games
Against Orianna
Not enough matchup-specific build data: only 0 of 17 Cassiopeia games against Orianna carried a complete build, which is too few to recommend an item path from. Use Cassiopeia's standard build instead.
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 Cassiopeia Runes vs Orianna
Usual Cassiopeia runes (Mid)
Deathfire Touch
59.4% win rate · 32 games
Against Orianna
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Cassiopeia 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
Cassiopeia matchup data for League of Legends patch 26.20. The table below shows Cassiopeia'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 Cassiopeia build, runes, laning stats, and early vs late game analysis for that specific matchup.
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.
Cassiopeia vs Orianna FAQ - Patch 26.20
Who wins Cassiopeia vs Orianna?
Only 17 Cassiopeia vs Orianna games were recorded in the Mid role on patch 26.20 — too few to say who is favored. Treat the numbers below as provisional.
What is Cassiopeia's win rate against Orianna?
Cassiopeia wins 58.8% of 17 Mid games against Orianna on patch 26.20 (95% range 36.0–78.4%). Based on both champions' overall Mid win rates, 48.3% would be expected.
Does Cassiopeia counter Orianna?
There are only 17 Cassiopeia vs Orianna games in this lane on patch 26.20 — too few to answer reliably yet.
Who wins lane, Cassiopeia or Orianna?
There are not enough games with a 15-minute snapshot yet (17) to say who wins lane.
Does Cassiopeia outscale Orianna?
There are too few games of each length to tell yet.
When is Orianna strongest against Cassiopeia?
On current data there is no stage of the game where Orianna is ahead of Cassiopeia beyond the margin of error.
What should Cassiopeia build against Orianna?
There are not enough games for a matchup-specific core, so use Cassiopeia's usual Mid core: Rod of Ages, Liandry's Torment, Rylai's Crystal Scepter.
What runes should Cassiopeia use against Orianna?
Use Cassiopeia's usual Deathfire Touch page (Sorcery + Precision); there are too few games for a matchup-specific page.