All on-screen ratingsSabrina Mergenthaler
On-screen PSR
Sabrina Mergenthaler
Reported challenge history for Sabrina Mergenthaler. 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 | Meltdown in Bolivia | 2014-04-20 | — | entry 6.7 | Unknown | Secondary source | Vincent Pinto |
Sources
- nakedandafraidfan.com/episodes/13 · 2026-08-10