--- title: "10% USP-S case on CSGOBig: odds, RTP & drops · gambatracker" description: "10% USP-S ($2.00) on CSGOBig, a CS2 case site: advertised RTP 89.99% from 8 items with odds, observed 87.95% over 610 openings in 30 days." url: https://gambatracker.com/cases/csgobig/32 rendered: 2026-11-11T12:49Z --- [Case sites](https://gambatracker.com/case-sites) / [CSGOBig](https://gambatracker.com/case-sites/csgobig) / [10% USP-S](https://gambatracker.com/cases/csgobig/32) # [CSGOBig](https://gambatracker.com/case-sites/csgobig) · 10% USP-S A case on CSGOBig, first seen 3 Nov 2026. Every value is CSGOBig's own item price converted from csgobig coin at the rate on the site page. [24h](https://gambatracker.com/cases/csgobig/32?window=24h) [7d](https://gambatracker.com/cases/csgobig/32?window=7d) [30d](https://gambatracker.com/cases/csgobig/32) [All](https://gambatracker.com/cases/csgobig/32?window=all) Price · $2.00 · 2 CSGOBIG\_COIN Advertised RTP · 89.99% · EV $1.80 from 8 items Observed RTP, 30d · 87.95% · 610 openings, odds method Variance · 12.1× · of price², per opening Tail share · 1 in 28 · of openings carry half the EV Below price · 90.0% · of openings return less than the price ## Advertised vs observed · per window, 95% band and the advertised marker observed, 95% band advertised outside band small sample 24 hours · 68 openings · below min 7 days · 83.24% ±28.92 554 openings 30 days · 87.95% ±27.56 610 openings since tracking started · 87.95% ±27.56 610 openings 39.0% 122.3% 205.5% ## Windows · the test per window | Window | Openings | Observed | Dev. | Method | | --- | --- | --- | --- | --- | | [24h](https://gambatracker.com/cases/csgobig/32?window=24h) | 68 | 122.07% ±82.5 | — | odds | | [7d](https://gambatracker.com/cases/csgobig/32?window=7d) | 554 | 83.24% ±28.9 | −0.5σ | odds | | [30d](https://gambatracker.com/cases/csgobig/32) | 610 | 87.95% ±27.6 | −0.1σ | odds | | [All](https://gambatracker.com/cases/csgobig/32?window=all) | 610 | 87.95% ±27.6 | −0.1σ | odds | Enough sample: 100 openings and 5 expected rare hits (odds method) or 1,000 openings (sample method). ## Items, odds and values · 8 items · odds sum to 1 · observed counts over 622 openings, 30 days Share of the expected value, most valuable first; colour is the item's rarity. | Item | Odds | Value | EV share | Observed | Expected | Hot / cold | | --- | --- | --- | --- | --- | --- | --- | | [StatTrak™ USP-S \| Orion (Factory New) StatTrak · weapon · #d32ee6](https://gambatracker.com/items/stattrak-usp-s-orion-factory-new) | 1 in 10,000 | $108 108 CSGOBIG\_COIN | 0.6% | 0 | 0.1 | — | | [USP-S \| Target Acquired (Field-Tested) weapon · classified](https://gambatracker.com/items/usp-s-target-acquired-field-tested) | 1 in 1,000 | $90.00 90 CSGOBIG\_COIN | 5.0% | 0 | 0.6 | — | | [StatTrak™ USP-S \| Caiman (Minimal Wear) StatTrak · weapon · classified](https://gambatracker.com/items/stattrak-usp-s-caiman-minimal-wear) | 1 in 204 | $68.00 68 CSGOBIG\_COIN | 18.5% | 5 | 3.0 | 1.64× | | [StatTrak™ USP-S \| Serum (Field-Tested) StatTrak · weapon · classified](https://gambatracker.com/items/stattrak-usp-s-serum-field-tested) | 1 in 100 | $25.00 25 CSGOBIG\_COIN | 13.9% | 3 | 6.2 | 0.48× | | [Souvenir USP-S \| Check Engine (Factory New) Souvenir · weapon · mil spec](https://gambatracker.com/items/souvenir-usp-s-check-engine-factory-new) | 1 in 50 | $15.00 15 CSGOBIG\_COIN | 16.7% | 12 | 12.4 | 0.96× | | [Souvenir USP-S \| Road Rash (Battle-Scarred) Souvenir · weapon · Restricted](https://gambatracker.com/items/souvenir-usp-s-road-rash-battle-scarred) | 1 in 33 | $14.00 14 CSGOBIG\_COIN | 23.3% | 20 | 18.7 | 1.07× | | [USP-S \| Purple DDPAT (Well-Worn) weapon · mil spec](https://gambatracker.com/items/usp-s-purple-ddpat-well-worn) | 1 in 29 | $9.26 9.26 CSGOBIG\_COIN | 17.5% | 16 | 21.1 | 0.76× | | [USP-S \| Forest Leaves (Battle-Scarred) weapon · #87c7ff](https://gambatracker.com/items/usp-s-forest-leaves-battle-scarred) | 90.0% | $0.09 0.09 CSGOBIG\_COIN | 4.5% | 566 | 559.8 | 1.01× | Values are CSGOBig's own item prices; EV share = odds × value ÷ EV. Hot / cold compares observed drops of each item with odds × openings; small expected counts are left blank. Odds read from `csgobig:api/cases/getDetails?id=32`, 11 Nov, 06:29 UTC. ## Biggest drops · from this case, by value **No drops yet** No drop from this case seen yet. ## Latest drops · newest first [All Latest drops →](https://gambatracker.com/drops?casino=csgobig&case=32) [USP-S | Forest Leaves (Battle-Scarred) weapon · #87c7ff](https://gambatracker.com/items/usp-s-forest-leaves-battle-scarred) Hidden $2.00 2 CSGOBIG\_COIN $0.09 0.09 CSGOBIG\_COIN 0.05x 2026-11-11 11:00 UTC [USP-S | Forest Leaves (Battle-Scarred) weapon · #87c7ff](https://gambatracker.com/items/usp-s-forest-leaves-battle-scarred) [maekechico](https://gambatracker.com/players/csgobig/maekechico) $2.00 2 CSGOBIG\_COIN $0.09 0.09 CSGOBIG\_COIN 0.05x 2026-11-11 11:00 UTC [USP-S | Forest Leaves (Battle-Scarred) weapon · #87c7ff](https://gambatracker.com/items/usp-s-forest-leaves-battle-scarred) Hidden $2.00 2 CSGOBIG\_COIN $0.09 0.09 CSGOBIG\_COIN 0.05x 2026-11-11 11:00 UTC [USP-S | Forest Leaves (Battle-Scarred) weapon · #87c7ff](https://gambatracker.com/items/usp-s-forest-leaves-battle-scarred) Hidden $2.00 2 CSGOBIG\_COIN $0.09 0.09 CSGOBIG\_COIN 0.05x 2026-11-11 11:00 UTC [USP-S | Forest Leaves (Battle-Scarred) weapon · #87c7ff](https://gambatracker.com/items/usp-s-forest-leaves-battle-scarred) Hidden $2.00 2 CSGOBIG\_COIN $0.09 0.09 CSGOBIG\_COIN 0.05x 2026-11-11 11:00 UTC [USP-S | Forest Leaves (Battle-Scarred) weapon · #87c7ff](https://gambatracker.com/items/usp-s-forest-leaves-battle-scarred) Hidden $2.00 2 CSGOBIG\_COIN $0.09 0.09 CSGOBIG\_COIN 0.05x 2026-11-11 11:00 UTC [USP-S | Forest Leaves (Battle-Scarred) weapon · #87c7ff](https://gambatracker.com/items/usp-s-forest-leaves-battle-scarred) Hidden $2.00 2 CSGOBIG\_COIN $0.09 0.09 CSGOBIG\_COIN 0.05x 2026-11-11 10:29 UTC [USP-S | Forest Leaves (Battle-Scarred) weapon · #87c7ff](https://gambatracker.com/items/usp-s-forest-leaves-battle-scarred) Hidden $2.00 2 CSGOBIG\_COIN $0.09 0.09 CSGOBIG\_COIN 0.05x 2026-11-11 10:29 UTC [USP-S | Forest Leaves (Battle-Scarred) weapon · #87c7ff](https://gambatracker.com/items/usp-s-forest-leaves-battle-scarred) Hidden $2.00 2 CSGOBIG\_COIN $0.09 0.09 CSGOBIG\_COIN 0.05x 2026-11-11 10:29 UTC [USP-S | Forest Leaves (Battle-Scarred) weapon · #87c7ff](https://gambatracker.com/items/usp-s-forest-leaves-battle-scarred) Hidden $2.00 2 CSGOBIG\_COIN $0.09 0.09 CSGOBIG\_COIN 0.05x 2026-11-11 10:29 UTC ## Catalog changes · price, advertised RTP and contents, per capture | Captured | Price | Advertised | Items | | --- | --- | --- | --- | | 3 Nov, 04:27 UTC | $2.00 | 89.99% | 8 | Each opening is tested against the capture in force when it happened; a price or odds change starts a new one. listed #d32ee6 0.0% classified 1.6% mil spec 5.4% Restricted 3.0% #87c7ff 90.0% best hit — 18+ **Case opening is gambling with skins as the currency.** At 90.0% RTP, every $100 put into cases returns $89.99 on average: an expected loss of $10.01 per $100, before any one lucky or unlucky opening. A big drop here says nothing about the next one. [BeGambleAware](https://www.begambleaware.org/) [Help & limits](https://gambatracker.com/responsible-gambling) How these figures are produced and labelled: https://gambatracker.com/llms.txt