BBZ Poker, the training site run by Jordan "bigbluffzinc" Drummond, sells a tournament hand history analysis tool called the Leak Finder (listed on their site as the MTT Database Leak Finder). You upload your hand histories, it runs 175 stats against a winning-player benchmark, and it returns a report showing which of your frequencies sit outside the target range.
Two things have changed since we first reviewed it. It is sold as a standalone subscription rather than bundled into a coaching tier, and it reads raw hand history files straight from most major poker sites, so a PokerTracker license is no longer part of the cost.
What the Leak Finder does
The tool works in three stages:
1. Upload your hand histories. You export hand history files from your poker client (PokerStars, GGPoker, partypoker, and most other major sites) and drop them into the BBZ platform. As of the August 2026 update, the parser reads those raw files directly. PokerTracker 4 is no longer needed in the chain, though BBZ still publishes a custom PT4 report if you already own a license and prefer that route.
2. Frequency analysis against a benchmark. The system scans 175 stats across preflop, flop, turn, and river (VPIP, PFR, 3-bet, fold-to-3-bet, c-bet, check-raise, probe, and the rest) and compares each one to a database of winning player tendencies. The benchmarks are chip EV. Results are broken out by position, from UTG through the blinds, rather than reported as a single table-wide number.
3. Leak report. Each stat comes back marked as inside the target range or flagged Low or High for review, ranked by estimated impact on your win rate. The report names the specific situation, for example "your river check-raise frequency in single-raised pots is 2.1%, benchmark is 5.8%".
Reports stay visible in your account for as long as your subscription is active, and you can put two side by side to see how your frequencies have moved between them.
What it costs
The Leak Finder is sold on its own. You do not need a BBZ coaching membership to use it, and buying a membership does not include it.
| Plan | Billed monthly | Billed annually | Uploads per month |
|---|---|---|---|
| Low Volume | $15/mo | $12.50/mo | 3 |
| High Volume | $20/mo | $16.70/mo | 10 |
Both tiers get the identical product: all 175 stats, positional analysis, and report comparison. Upload volume is the only difference. BBZ positions the high tier at coaches running reports for multiple students.
Check the BBZ Leak Finder page for current pricing; they adjust tiers and features periodically.
How it compares to tracking software
PokerTracker 4 and Hold'em Manager show you your own stats. You can see that your VPIP is 24% or your c-bet frequency is 67%, but they do not tell you what those numbers should be for a winning player. They also run live at the table, which the Leak Finder does not.
The Leak Finder supplies the benchmark. It reports the same kind of frequencies and adds the comparison against winning-player data, so the output is a list of stats already flagged as inside or outside range. Since the August 2026 parser update it runs without a tracker license, so it works as a standalone purchase rather than an add-on to software you already own.
Who it fits
Anyone with a decent sample of tournament hands to upload. The output does not change by stake, and the benchmark comparison reads the same whether you are playing $5 or $500 buy-ins.
The one requirement is volume. BBZ puts the number at roughly 50,000 hands for reliable feedback on the most common spots. If you have that, you can upload a database and see your report.
Strengths
- Covers 175 stats in a single pass, across preflop, flop, turn, and river
- Flags each stat as in range, Low, or High, and ranks findings by estimated impact
- Breaks results out by position rather than reporting table-wide averages
- Report comparison shows how your frequencies have moved between uploads
- Runs without a tracker license
- Reports stay available while your subscription is active
- Integrates with BBZ's coaching content, so an identified leak may have related training material
Limitations
- Tournaments only. BBZ states the tool does not work for cash games
- Needs a large sample. BBZ recommends around 50,000 hands for reliable feedback, and smaller samples return a report with a reliability caveat attached
- Chip EV benchmarks. They do not apply to ICM or PKO spots, where the correct frequency departs from the chip-EV baseline
Bottom line
The Leak Finder is a chip EV tool. It tells you which of your tournament frequencies fall outside a winning benchmark, by position, across 175 stats, and the output is a set of big ideas to point your studies at rather than a ruling on any individual spot. ICM and PKO spots sit outside what it measures. At $15 a month standalone with no tracker license required, the entry cost is lower than it was when access came through a coaching tier.
For players who want to model how variance affects their results independently of leaks, PrimeDope's tournament variance calculator shows you how much of your recent results are signal vs. noise, a different but complementary angle on the same question of "am I winning?"
See the BBZ Leak Finder for current pricing and access.
