Items · rolling 7 days
Armor Piercer
weapon · Tier 4 · 6,400 souls
Win rate
54.8%
95% CI 54.5–55.0
Matches
137,450
bought, last 7 days
Win-rate rank
#29
of 156 items
Usage rank
#148
of 156 items
This week vs last week
Basically unchanged — win rate wobbled down about 0.3 points (55.1% → 54.8%), but that's inside the normal week-to-week randomness, not a real move.
p = 0.0997 — the odds a swing this big is just luck — too high to trust as a real change across all the heroes we test each week.
Win rate by when it was bought
- 10–20 min55.8% (53.8–57.7, 2,426)
- After 20 min54.8% (54.5–55.0, 135,989)
The win rate barely moves with buy time — timing isn't what separates good games from bad ones for this item.
Read this before trusting the number
An item's win rate is correlational. Expensive late-game items post high win rates largely because you only complete them when your team is already ahead — not because the item is what won the game. Use it to see what the strong builds tend to include, not as a causal "buy this to win" ranking.
Win rate is the share of matches won when this item was bought, over a rolling 7-day window; the trend compares it to the 7 days before with a Bonferroni-corrected two-proportion z-test so a normal weekly wobble isn't reported as a shift. Data from deadlock-api.com, refreshed hourly.