- Win Rate
- 51.3%
- Pick Rate
- 3.6%
- Ban Rate
- 14.8%
Blitzcrank vs Senna
- Patch
- 26.21
- Games
- 7,207
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Nov 3, 2026 UTC
- Author
- Dakota Chinnick
- Methodology
- Data Methodology
Blitzcrank vs Senna is a decisive matchup in LoL patch 26.21. Blitzcrank wins with a 54.2% win rate (+8.4%) over Senna based on 203 games. Blitzcrank holds the advantage in both the early and late game. Below you'll find the best Blitzcrank build, runes, laning stats, and strategies for the Blitzcrank vs Senna matchup.
Blitzcrank Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Blitzcrank 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 Blitzcrank vs Senna?
Blitzcrank wins 54.0% of these games. With this many games the true rate is most likely between 47.1% and 60.8% (95% range).
- Expected
- 50.1% From both champions' overall Support win rates
- Matchup effect
- +3.9 pts Observed minus expected
- Sample
- 198 games Lane: Support
- vs patch 26.20
- +1.5 pts Within normal patch-to-patch noise
Lane: Support · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.21 · Oct 27 – Nov 3
Key takeaways
- Current data slightly favors Blitzcrank, but the sample is too limited for a strong conclusion: Blitzcrank wins 54.0% of 198 games (95% range 47.1–60.8%).
- Both champions' overall Support win rates predict 50.1% for Blitzcrank; 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: 474 gold ahead of Blitzcrank at 15 minutes on average (198 games with a 15-minute snapshot).
- Blitzcrank players pick Plated Steelcaps far more often against Senna: 6.8% of their other Support games, 10.6% 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 Blitzcrank 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 Blitzcrank'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.
Blitzcrank vs Senna Laning Stats
At 15 minutes
Whole-game averages
Blitzcrank vs Senna Win Rate by Game Length
Blitzcrank'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: Blitzcrank's results against Senna in short and long games are within the margin of error of each other.
Blitzcrank 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)SennaBlitzcrank gold at 15: −474
- First itemEvenBlitzcrank: 13.4 min · Senna: 13.8 min
- Games under 20 minInsufficient data
- 20–30 min gamesEvenBlitzcrank wins 52.0% of 75 games
- 30+ min gamesEvenBlitzcrank wins 54.3% of 105 games
What Blitzcrank Changes Against Senna
Choices Blitzcrank players make noticeably more or less often in this matchup than in their other Support games.
Plated SteelcapsBootsUsually6.8%vs Senna10.6%+3.8 pts57.1% WR here
StormsurgeItemUsually2.5%vs Senna5.6%+3.1 pts
Best Blitzcrank Build vs Senna
Usual Blitzcrank build (Support)
59.6% win rate · 349 games
Against Senna
Not enough matchup-specific build data: only 11 of 91 Blitzcrank games against Senna carried a complete build, which is too few to recommend an item path from. Use Blitzcrank's standard build instead.
- Blitzcrank usually completes Locket of the Iron Solari first, at 13.4 min (median of 103 games).
- Senna usually completes Black Cleaver first, at 13.8 min (median of 82 games).
- Skill priority: Q > E > W — 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 Blitzcrank Runes vs Senna
Usual Blitzcrank runes (Support)
Glacial Augment
73.7% win rate · 19 games
Against Senna
Aftershock
60.6% win rate · 33 games
Plan your Blitzcrank 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
Blitzcrank matchup data for League of Legends patch 26.21. The table below shows Blitzcrank'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 Blitzcrank build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Blitzcrank Matchups
Hardest for Blitzcrank
Easiest for Blitzcrank
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.
Blitzcrank vs Senna FAQ - Patch 26.21
Who wins Blitzcrank vs Senna?
Current data slightly favors Blitzcrank, but the sample is too limited for a strong conclusion: Blitzcrank wins 54.0% of 198 games (95% range 47.1–60.8%).
What is Blitzcrank's win rate against Senna?
Blitzcrank wins 54.0% of 198 Support games against Senna on patch 26.21 (95% range 47.1–60.8%). Based on both champions' overall Support win rates, 50.1% would be expected.
Does Blitzcrank counter Senna?
Not clearly. Blitzcrank wins 54.0% of 198 games against Senna, and the 95% range (47.1–60.8%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Blitzcrank or Senna?
Senna usually wins the lane: 474 gold ahead of Blitzcrank at 15 minutes on average (198 games with a 15-minute snapshot).
Does Blitzcrank outscale Senna?
Not measurably: Blitzcrank'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 Blitzcrank?
Senna is measurably ahead in: Lane (15 min).
What should Blitzcrank build against Senna?
There are not enough games for a matchup-specific core, so use Blitzcrank's usual Support core: Locket of the Iron Solari, Frozen Heart, Thornmail. The biggest change against Senna: Plated Steelcaps (6.8% usually, 10.6% here).
What runes should Blitzcrank use against Senna?
Aftershock with Resolve and Inspiration — 60.6% over 33 games against Senna.