College production summary feeding the v3.0 similarity vector. The engine weights these features against the prospect corpus (2000–present) to build the comp grid below.
Historical college players whose production curves most closely match Sean Clifford. Hit-label colouring tags each comp's eventual NFL outcome: elite, starter, bust, unknown (still developing or never reached the NFL). Click an NFL name to jump to its veteran page when available.
| College player | School | Class | Similarity | NFL outcome | NFL career | Career fp | Peak3 fp/g | Seasons |
|---|---|---|---|---|---|---|---|---|
| Jake Locker | Washington | 2011 | 0.810 | starter | Jake Locker | 345 | 12.0 | 4 |
| Landry Jones | Oklahoma | 2013 | 0.725 | bust | Landry Jones | 64 | 3.6 | 3 |
| Charlie Brewer | Baylor | 2021 | 0.704 | unknown | Charlie Brewer | — | — | — |
| Will Howard | Ohio State | 2025 | 0.700 | unknown | Will Howard | — | — | — |
| Taylor Martinez | Nebraska | 2014 | 0.618 | unknown | Taylor Martinez | — | — | — |
| Justin Herbert | Oregon | 2020 | 0.606 | elite | Justin Herbert | 1872 | 20.9 | 7 |
| Kellen Mond | Texas A&M | 2021 | 0.593 | unknown | Kellen Mond | 0 | 0.2 | 1 |
| Max Duggan | TCU | 2023 | 0.570 | unknown | Max Duggan | — | — | — |
| Matt Barkley | USC | 2013 | 0.559 | unknown | Matt Barkley | 106 | 10.1 | 7 |
| Spencer Rattler | South Carolina | 2024 | 0.552 | unknown | Spencer Rattler | 166 | 10.3 | 2 |
| Brock Purdy | Iowa State | 2022 | 0.544 | elite | Brock Purdy | 992 | 19.7 | 5 |
| Garrett Shrader | Syracuse | 2024 | 0.531 | unknown | Garrett Shrader | — | — | — |
| Drew Lock | Missouri | 2019 | 0.503 | starter | Drew Lock | 445 | 14.9 | 7 |
| Tommy Armstrong Jr. | Nebraska | 2017 | 0.498 | unknown | Tommy Armstrong Jr. | — | — | — |
| B.J. Daniels | South Florida | 2013 | 0.495 | unknown | B.J. Daniels | — | — | — |
| Tyler Huntley | Utah | 2020 | 0.488 | unknown | Tyler Huntley | 317 | 11.6 | 7 |
| Jordan Travis | Florida State | 2024 | 0.483 | unknown | Jordan Travis | — | — | — |
| Juice Williams | Illinois | 2010 | 0.475 | unknown | Juice Williams | — | — | — |
| KJ Jefferson | UCF | 2025 | 0.471 | unknown | KJ Jefferson | — | — | — |
| Tyler Shough | Louisville | 2025 | 0.464 | starter | Tyler Shough | 284 | 16.2 | 2 |
| Sefo Liufau | Colorado | 2017 | 0.464 | unknown | Sefo Liufau | — | — | — |
| Taylen Green | Arkansas | 2026 | 0.464 | unknown | Taylen Green | — | — | — |
| Taulia Tagovailoa | Maryland | 2024 | 0.464 | unknown | Taulia Tagovailoa | — | — | — |
| Thomas Castellanos | Florida State | 2026 | 0.461 | unknown | Thomas Castellanos | — | — | — |
| Russell Wilson | Wisconsin | 2012 | 0.456 | elite | Russell Wilson | 3765 | 21.7 | 14 |
Methodology details: v3.0 prospect engine — PR 3 similarity, PR 4 projection, PR 5 back-test.