- Win Rate
- 51.8%
- Pick Rate
- 2.2%
- Ban Rate
- 0.7%
Ornn vs Sion
- Patch
- 26.21
- Games
- 4,392
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Nov 3, 2026 UTC
- Author
- Dakota Chinnick
- Methodology
- Data Methodology
Ornn vs Sion is a decisive matchup in LoL patch 26.21. Ornn wins with a 65.3% win rate (+30.7%) over Sion based on 75 games. Ornn holds the advantage in both the early and late game. Below you'll find the best Ornn build, runes, laning stats, and strategies for the Ornn vs Sion matchup.
Ornn Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Ornn 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 Ornn vs Sion?
Ornn wins 65.3% of these games. With this many games the true rate is most likely between 53.8% and 75.2% (95% range).
- Expected
- 52.4% From both champions' overall Top win rates
- Matchup effect
- +12.9 pts Observed minus expected
- Sample
- 72 games Lane: Top
- vs patch 26.20
- — Not enough games on both patches
Lane: Top · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.21 · Oct 27 – Nov 2
Key takeaways
- Ornn is favored in this matchup: Ornn wins 65.3% of 72 games, and the whole 95% range (53.8–75.2%) is on the same side of 50%.
- That is 12.9 points better for Ornn than both champions' overall Top win rates predict (52.4%), so the matchup itself favors this pick — not just champion strength.
- Sion usually wins the lane: 413 gold ahead of Ornn at 15 minutes on average (72 games with a 15-minute snapshot).
- Ornn players pick Sunfire Aegis far more often against Sion: 39.2% of their other Top games, 59.7% 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 Ornn and Sion 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 Ornn'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.
Ornn vs Sion Laning Stats
At 15 minutes
Whole-game averages
Ornn vs Sion Win Rate by Game Length
Ornn's win rate against Sion 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: Ornn's results against Sion in short and long games are within the margin of error of each other.
Ornn vs Sion 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)SionOrnn gold at 15: −413
- First itemEvenOrnn: 11.7 min · Sion: 11.8 min
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesOrnnOrnn wins 70.7% of 41 games
What Ornn Changes Against Sion
Choices Ornn players make noticeably more or less often in this matchup than in their other Top games.
Sunfire AegisItemUsually39.2%vs Sion59.7%+20.5 pts72.1% WR here
Hollow RadianceItemUsually25.5%vs Sion11.1%−14.4 pts
HeartsteelItemUsually10.0%vs Sion23.6%+13.6 pts
Doran's Helm + Health PotionStarting itemsUsually17.6%vs Sion6.9%−10.7 pts
ScorchRuneUsually10.4%vs Sionunder 2%−10.4 pts
Best Ornn Build vs Sion
Usual Ornn build (Top)
88.9% win rate · 18 games
Against Sion
Not enough matchup-specific build data: only 11 of 45 Ornn games against Sion carried a complete build, which is too few to recommend an item path from. Use Ornn's standard build instead.
- Ornn usually completes Sunfire Aegis first, at 11.7 min (median of 36 games).
- Sion usually completes Heartsteel first, at 11.8 min (median of 41 games).
- Skill priority: W > Q > E — 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 Ornn Runes vs Sion
Usual Ornn runes (Top)
Grasp of the Undying
53.6% win rate · 1,222 games
Against Sion
Grasp of the Undying83.3% win rate · 24 games
Plan your Ornn 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
Ornn matchup data for League of Legends patch 26.21. The table below shows Ornn'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 Ornn build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Ornn Matchups
Hardest for Ornn
Easiest for Ornn
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.
Ornn vs Sion FAQ - Patch 26.21
Who wins Ornn vs Sion?
Ornn is favored in this matchup: Ornn wins 65.3% of 72 games, and the whole 95% range (53.8–75.2%) is on the same side of 50%.
What is Ornn's win rate against Sion?
Ornn wins 65.3% of 72 Top games against Sion on patch 26.21 (95% range 53.8–75.2%). Based on both champions' overall Top win rates, 52.4% would be expected.
Does Ornn counter Sion?
Yes. Ornn wins 65.3% of 72 games against Sion on patch 26.21, and the whole 95% range is above 50%.
Who wins lane, Ornn or Sion?
Sion usually wins the lane: 413 gold ahead of Ornn at 15 minutes on average (72 games with a 15-minute snapshot).
Does Ornn outscale Sion?
There are too few games of each length to tell yet.
When is Sion strongest against Ornn?
Sion is measurably ahead in: Lane (15 min).
What should Ornn build against Sion?
There are not enough games for a matchup-specific core, so use Ornn's usual Top core: Jak'Sho, The Protean, Randuin's Omen, Frozen Heart. The biggest change against Sion: Sunfire Aegis (39.2% usually, 59.7% here).
What runes should Ornn use against Sion?
Grasp of the Undying with Resolve and Precision — 83.3% over 24 games against Sion. The biggest change against Sion: Scorch (10.4% usually, under 2% here).