Swainvs Janna
Swain vs Janna is a decisive matchup in LoL patch 26.19. Janna wins with a 63.4% win rate (+26.8%) over Swain based on 82 games. Janna holds the advantage in both the early and late game. Below you'll find the best Swain build, runes, laning stats, and strategies for the Swain vs Janna matchup.
Swain Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Swain 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 Swain vs Janna?
Swain wins 39.9% of these games. With this many games the true rate is most likely between 32.2% and 48.0% (95% range).
- Expected
- 46.2% From both champions' overall Support win rates
- Matchup effect
- −6.4 pts Observed minus expected
- Sample
- 143 games Lane: Support
- vs patch 26.18
- −18.3 pts A real change since last patch
Lane: Support · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.19 · Sep 24 – Sep 28
Key takeaways
- Janna is favored in this matchup: Swain wins 39.9% of 143 games, and the whole 95% range (32.2–48.0%) is on the same side of 50%.
- Both champions' overall Support win rates predict 46.2% for Swain; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Swain usually wins the lane: 415 gold ahead of Janna at 15 minutes on average (140 games with a 15-minute snapshot).
- Swain players pick Flash + Ignite much less often against Janna: 71.4% of their other Support games, 60.1% 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 Swain and Janna 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 Swain'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.
Swain vs Janna Laning Stats
At 15 minutes
Whole-game averages
Swain vs Janna Win Rate by Game Length
Swain's win rate against Janna 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: Swain's results against Janna in short and long games are within the margin of error of each other.
Swain vs Janna 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)SwainSwain gold at 15: +415
- First itemSwainSwain: 12.3 min · Janna: 13.6 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenSwain wins 37.7% of 61 games
- 30+ min gamesJannaSwain wins 36.4% of 66 games
What Swain Changes Against Janna
Choices Swain players make noticeably more or less often in this matchup than in their other Support games.
Flash + IgniteSummoner spellsUsually71.4%vs Janna60.1%−11.3 pts41.9% WR here
Plated SteelcapsBootsUsually16.4%vs Janna27.3%+10.9 pts41.0% WR here
Sorcerer's ShoesBootsUsually49.3%vs Janna39.2%−10.1 pts46.4% WR here
Health Potion + Health Potion + Stealth WardStarting itemsUsually47.2%vs Janna56.9%+9.7 pts35.9% WR here
Usually40.5%vs Janna32.2%−8.4 pts32.6% WR here
ScorchRuneUsually6.1%vs Janna14.0%+7.9 pts50.0% WR here
Exhaust + FlashSummoner spellsUsually18.9%vs Janna25.9%+7.0 pts43.2% WR here
Manaflow BandRuneUsually7.1%vs Janna11.9%+4.8 pts
Best Swain Build vs Janna
Usual Swain build (Support)
77.3% win rate · 22 games
Against Janna
Not enough matchup-specific build data: only 3 of 40 Swain games against Janna carried a complete build, which is too few to recommend an item path from. Use Swain's standard build instead.
- Swain usually completes Rylai's Crystal Scepter first, at 12.3 min (median of 85 games).
- Janna usually completes Moonstone Renewer first, at 13.6 min (median of 81 games).
- Skill priority: Q > W > 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 Swain Runes vs Janna
Usual Swain runes (Support)
Conqueror
49.5% win rate · 1,372 games
Against Janna
Conqueror44.4% win rate · 45 games
Plan your Swain 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
Swain matchup data for League of Legends patch 26.19. The table below shows Swain'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 Swain build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Swain Matchups
Hardest for Swain
Easiest for Swain
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.
Swain vs Janna FAQ - Patch 26.19
Who wins Swain vs Janna?
Janna is favored in this matchup: Swain wins 39.9% of 143 games, and the whole 95% range (32.2–48.0%) is on the same side of 50%.
What is Swain's win rate against Janna?
Swain wins 39.9% of 143 Support games against Janna on patch 26.19 (95% range 32.2–48.0%). Based on both champions' overall Support win rates, 46.2% would be expected.
Does Swain counter Janna?
No — it is the other way around: Swain wins only 39.9% of 143 games against Janna, and the whole 95% range is below 50%.
Who wins lane, Swain or Janna?
Swain usually wins the lane: 415 gold ahead of Janna at 15 minutes on average (140 games with a 15-minute snapshot).
Does Swain outscale Janna?
There are too few games of each length to tell yet.
When is Janna strongest against Swain?
Janna is measurably ahead in: 30+ min games.
What should Swain build against Janna?
There are not enough games for a matchup-specific core, so use Swain's usual Support core: Liandry's Torment, Rylai's Crystal Scepter, Unending Despair. The biggest change against Janna: Plated Steelcaps (16.4% usually, 27.3% here).
What runes should Swain use against Janna?
Conqueror with Precision and Resolve — 44.4% over 45 games against Janna. The biggest change against Janna: Flash + Ignite (71.4% usually, 60.1% here).