Items · rolling 7 days
Stamina Mastery
vitality · Tier 3 · 3,200 souls
Win rate
50.3%
95% CI 50.2–50.3
Matches
2,261,467
bought, last 7 days
Win-rate rank
#93
of 156 items
Usage rank
#28
of 156 items
This week vs last week
Basically unchanged — win rate wobbled up about 0.0 points (50.3% → 50.3%), but that's inside the normal week-to-week randomness, not a real move.
p = 0.9370 — 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
- Before 10 min55.4% (54.7–56.2, 17,196)
- 10–20 min51.9% (51.8–52.0, 1,014,656)
- After 20 min48.8% (48.8–48.9, 1,247,947)
Buying it later goes with a lower win rate (6.6pp) — a real gap, but remember late buys usually mean you were already ahead.
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.