All on-screen ratingsZack Buck
On-screen PSR
Zack Buck
Reported challenge history for Zack Buck. Numbers are appearance-specific — a later return does not rewrite an earlier rating.
These are broadcast ratings reported for the show — not PSR Expert's calculator, and not an official Discovery database.
PSR trajectory
Entry and final ratings across challenges, when recorded. Most appearances have only the entry rating; where a final is known it can move either way.
Appearances
| Series | Challenge | Air date | Days | PSR | Result | Verification | With |
|---|---|---|---|---|---|---|---|
| Naked and Afraid | Edge of Madness | 2015-05-10 | — | entry 6.8 | Unknown | Secondary source | Afften DeShazer |
Sources
- nakedandafraidfan.com/episodes/27 · 2026-08-10