Lockevs Cassiopeia
Locke vs Cassiopeia is a decisive matchup in LoL patch 26.19. Cassiopeia wins with a 53.9% win rate (+7.7%) over Locke based on 13 games. Cassiopeia wins the early laning phase while Locke scales better into the late game. Below you'll find the best Locke build, runes, laning stats, and strategies for the Locke vs Cassiopeia matchup.
Locke Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Locke 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 Locke vs Cassiopeia?
Locke wins 63.0% of these games. With this many games the true rate is most likely between 44.2% and 78.5% (95% range).
- Expected
- 50.7% From both champions' overall Mid win rates
- Matchup effect
- +12.2 pts Observed minus expected
- Sample
- 27 games Lane: Mid
- vs patch 26.18
- — Not enough games on both patches
Lane: Mid · Ranked Solo/Duo & Flex · North America server · All ranks · Patch 26.19 · Sep 24 – Sep 28
Key takeaways
- Current data slightly favors Locke, but the sample is too limited for a strong conclusion: Locke wins 63.0% of 27 games (95% range 44.2–78.5%).
- Both champions' overall Mid win rates predict 50.7% for Locke; the result is within the margin of error of that, so this matchup mostly reflects the two champions' general strength.
- Locke players pick Stormsurge far more often against Cassiopeia: 30.7% of their other Mid games, 51.9% 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 Locke and Cassiopeia 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 Locke'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.
Locke vs Cassiopeia Laning Stats
Only 27 games have a 15-minute snapshot so far — the lane-phase numbers appear from 30.
Whole-game averages
Locke vs Cassiopeia Win Rate by Game Length
Locke's win rate against Cassiopeia 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: Locke's results against Cassiopeia in short and long games are within the margin of error of each other.
Locke vs Cassiopeia 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)Insufficient data
- First itemInsufficient data
- Games under 20 minInsufficient data
- 20–30 min gamesInsufficient data
- 30+ min gamesInsufficient data
What Locke Changes Against Cassiopeia
Choices Locke players make noticeably more or less often in this matchup than in their other Mid games.
StormsurgeItemUsually30.7%vs Cassiopeia51.9%+21.2 pts
PrecisionSecondary treeUsually46.9%vs Cassiopeia66.7%+19.7 pts
Stormraider's SurgeKeystoneUsually3.1%vs Cassiopeia11.1%+8.0 pts
CelerityRuneUsually3.6%vs Cassiopeia11.1%+7.5 pts
Statikk ShivItemUsuallyunder 0.5%vs Cassiopeia3.7%+3.7 pts
Usuallyunder 0.5%vs Cassiopeia3.7%+3.7 pts
Doran's Ring + Health Potion + Health Potion + Refillable PotionStarting itemsUsuallyunder 0.5%vs Cassiopeia3.7%+3.7 pts
Best Locke Build vs Cassiopeia
Usual Locke build (Mid)
100.0% win rate · 10 games
Against Cassiopeia
Not enough matchup-specific build data: only 4 of 22 Locke games against Cassiopeia carried a complete build, which is too few to recommend an item path from. Use Locke's standard build instead.
- Locke usually completes Lich Bane first, at 11.5 min (median of 22 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 Locke Runes vs Cassiopeia
Usual Locke runes (Mid)
Electrocute
72.0% win rate · 25 games
Against Cassiopeia
Too few games for a matchup-specific rune page yet — use the usual page.
Plan your Locke 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
Locke matchup data for League of Legends patch 26.19. The table below shows Locke'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 Locke build, runes, laning stats, and early vs late game analysis for that specific matchup.
Other Locke Matchups
Hardest for Locke
Easiest for Locke
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.
Locke vs Cassiopeia FAQ - Patch 26.19
Who wins Locke vs Cassiopeia?
Current data slightly favors Locke, but the sample is too limited for a strong conclusion: Locke wins 63.0% of 27 games (95% range 44.2–78.5%).
What is Locke's win rate against Cassiopeia?
Locke wins 63.0% of 27 Mid games against Cassiopeia on patch 26.19 (95% range 44.2–78.5%). Based on both champions' overall Mid win rates, 50.7% would be expected.
Does Locke counter Cassiopeia?
Not clearly. Locke wins 63.0% of 27 games against Cassiopeia, and the 95% range (44.2–78.5%) includes 50%, so neither champion reliably counters the other on current data.
Who wins lane, Locke or Cassiopeia?
There are not enough games with a 15-minute snapshot yet (27) to say who wins lane.
Does Locke outscale Cassiopeia?
There are too few games of each length to tell yet.
When is Cassiopeia strongest against Locke?
On current data there is no stage of the game where Cassiopeia is ahead of Locke beyond the margin of error.
What should Locke build against Cassiopeia?
There are not enough games for a matchup-specific core, so use Locke's usual Mid core: Bloodletter's Curse, Lich Bane, Mejai's Soulstealer. The biggest change against Cassiopeia: Stormsurge (30.7% usually, 51.9% here).
What runes should Locke use against Cassiopeia?
Use Locke's usual Electrocute page (Domination + Resolve); there are too few games for a matchup-specific page. The biggest change against Cassiopeia: Precision (46.9% usually, 66.7% here).