Jannavs Senna
Janna vs Senna 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 Janna build, runes, laning stats, and strategies for the Janna vs Senna matchup.
Janna Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Janna 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 Janna vs Senna?
Janna wins 53.1% of these games. With this many games the true rate is most likely between 46.1% and 60.0% (95% range).
- Expected
- 53.0% 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: Janna wins 53.1% of 194 games (95% range 46.1–60.0%).
- Both champions' overall Support win rates predict 53.0% for Janna; 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).
- Janna players pick Mikael's Blessing much less often against Senna: 13.4% of their other Support games, 8.2% 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 Janna and Senna 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 Janna'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.
Janna vs Senna Laning Stats
At 15 minutes
Whole-game averages
Janna vs Senna Win Rate by Game Length
Janna's win rate against Senna 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: Janna's results against Senna in short and long games are within the margin of error of each other.
Janna vs Senna 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)SennaJanna gold at 15: −489
- First itemEvenJanna: 13.9 min · Senna: 13.6 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenJanna wins 46.7% of 75 games
- 30+ min gamesEvenJanna wins 55.6% of 99 games
What Janna Changes Against Senna
Choices Janna players make noticeably more or less often in this matchup than in their other Support games.
Usually13.4%vs Senna8.2%−5.1 pts- W > Q > Ethe W > Q > E skill orderSkill priorityUsuallyunder 0.5%vs Senna4.1%+4.1 pts
InspirationSecondary treeUsually3.0%vs Senna6.2%+3.2 pts
Cash BackRuneUsually1.6%vs Senna4.6%+3.1 pts
Best Janna Build vs Senna
Usual Janna build (Support)
82.9% win rate · 41 games
Against Senna
Not enough matchup-specific build data: only 11 of 84 Janna games against Senna carried a complete build, which is too few to recommend an item path from. Use Janna's standard build instead.
- Janna usually completes Moonstone Renewer first, at 13.9 min (median of 112 games).
- Senna usually completes Black Cleaver first, at 13.6 min (median of 81 games).
- Skill priority: W > E > Q — 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 Janna Runes vs Senna
Usual Janna runes (Support)
Glacial Augment
75.0% win rate · 24 games
Against Senna
Summon Aery
51.9% win rate · 77 games
Plan your Janna 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
Janna matchup data for League of Legends patch 26.19. The table below shows Janna'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 Janna build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Janna Matchups
Hardest for Janna
Easiest for Janna
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.
Janna vs Senna FAQ - Patch 26.19
Who wins Janna vs Senna?
Current data slightly favors Janna, but the sample is too limited for a strong conclusion: Janna wins 53.1% of 194 games (95% range 46.1–60.0%).
What is Janna's win rate against Senna?
Janna wins 53.1% of 194 Support games against Senna on patch 26.19 (95% range 46.1–60.0%). Based on both champions' overall Support win rates, 53.0% would be expected.
Does Janna counter Senna?
Not clearly. Janna wins 53.1% of 194 games against Senna, and the 95% range (46.1–60.0%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Janna or Senna?
Senna usually wins the lane: 489 gold ahead of Janna at 15 minutes on average (190 games with a 15-minute snapshot).
Does Janna outscale Senna?
Not measurably: Janna's win rate against Senna in games of 25 minutes or less and in longer games is within the margin of error of each other.
When is Senna strongest against Janna?
Senna is measurably ahead in: Lane (15 min).
What should Janna build against Senna?
There are not enough games for a matchup-specific core, so use Janna's usual Support core: Moonstone Renewer, Ardent Censer, Mejai's Soulstealer. The biggest change against Senna: Mikael's Blessing (13.4% usually, 8.2% here).
What runes should Janna use against Senna?
Summon Aery with Sorcery and Resolve — 51.9% over 77 games against Senna. The biggest change against Senna: Inspiration (3.0% usually, 6.2% here).