Sennavs Janna
Senna vs Janna is a very close matchup in LoL patch 26.19. Senna wins with a 50.5% win rate (+1.1%) over Janna based on 93 games. Senna wins the early laning phase while Janna scales better into the late game. Below you'll find the best Senna build, runes, laning stats, and strategies for the Senna vs Janna matchup.
Senna Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Senna 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 Senna vs Janna?
Senna wins 46.9% of these games. With this many games the true rate is most likely between 40.0% and 53.9% (95% range).
- Expected
- 47.0% From both champions' overall Support win rates
- Matchup effect
- −0.1 pts Observed minus expected
- Sample
- 194 games Lane: Support
- vs patch 26.18
- −4.4 pts Within normal patch-to-patch noise
Lane: Support · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.19 · Sep 24 – Sep 28
Key takeaways
- Current data slightly favors Janna, but the sample is too limited for a strong conclusion: Senna wins 46.9% of 194 games (95% range 40.0–53.9%).
- Both champions' overall Support win rates predict 47.0% for Senna; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Senna usually wins the lane: 489 gold ahead of Janna at 15 minutes on average (190 games with a 15-minute snapshot).
- Senna players pick Serpent's Fang far more often against Janna: 5.9% of their other Support games, 19.6% 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 Senna 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 Senna'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.
Senna vs Janna Laning Stats
At 15 minutes
Whole-game averages
Senna vs Janna Win Rate by Game Length
Senna'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: Senna's results against Janna in short and long games are within the margin of error of each other.
Senna 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)SennaSenna gold at 15: +489
- First itemEvenSenna: 13.6 min · Janna: 13.9 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenSenna wins 53.3% of 75 games
- 30+ min gamesEvenSenna wins 44.4% of 99 games
What Senna Changes Against Janna
Choices Senna players make noticeably more or less often in this matchup than in their other Support games.
Serpent's FangItemUsually5.9%vs Janna19.6%+13.6 pts50.0% WR here
Black CleaverItemUsually69.3%vs Janna61.9%−7.5 pts48.3% WR here
Infinity EdgeItemUsually16.9%vs Janna10.8%−6.1 pts61.9% WR here
Flash + IgniteSummoner spellsUsually7.1%vs Janna2.1%−5.0 pts
Berserker's GreavesBootsUsually12.0%vs Janna7.2%−4.8 pts
Plated SteelcapsBootsUsually2.4%vs Janna5.7%+3.2 pts
Best Senna Build vs Janna
Usual Senna build (Support)
90.9% win rate · 11 games
Limited sample: 24 of 82 games finished this exact core, so treat it as an observation rather than a recommendation.
- Senna usually completes Black Cleaver first, at 13.6 min (median of 81 games).
- Janna usually completes Moonstone Renewer first, at 13.9 min (median of 112 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 Senna Runes vs Janna
Usual Senna runes (Support)
Deathfire Touch
53.0% win rate · 965 games
Against Janna
Deathfire Touch56.3% win rate · 32 games
Plan your Senna 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
Senna matchup data for League of Legends patch 26.19. The table below shows Senna'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 Senna build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Senna Matchups
Hardest for Senna
Easiest for Senna
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.
Senna vs Janna FAQ - Patch 26.19
Who wins Senna vs Janna?
Current data slightly favors Janna, but the sample is too limited for a strong conclusion: Senna wins 46.9% of 194 games (95% range 40.0–53.9%).
What is Senna's win rate against Janna?
Senna wins 46.9% of 194 Support games against Janna on patch 26.19 (95% range 40.0–53.9%). Based on both champions' overall Support win rates, 47.0% would be expected.
Does Senna counter Janna?
Not clearly. Senna wins 46.9% of 194 games against Janna, and the 95% range (40.0–53.9%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Senna or Janna?
Senna usually wins the lane: 489 gold ahead of Janna at 15 minutes on average (190 games with a 15-minute snapshot).
Does Senna outscale Janna?
Not measurably: Senna's win rate against Janna in games of 25 minutes or less and in longer games is within the margin of error of each other.
When is Janna strongest against Senna?
On current data there is no stage of the game where Janna is ahead of Senna beyond the margin of error.
What should Senna build against Janna?
The most successful Senna core against Janna is Rapid Firecannon, Statikk Shiv, Black Cleaver (41.7% over 24 games). The biggest change against Janna: Serpent's Fang (5.9% usually, 19.6% here).
What runes should Senna use against Janna?
Deathfire Touch with Sorcery and Inspiration — 56.3% over 32 games against Janna. The biggest change against Janna: Flash + Ignite (7.1% usually, 2.1% here).