Event Note:
| % | Championship | 51.67m | Tyler Fischer | Central Washington | 2008 |
| # | GNAC | 55.68m | Caleb Bridge | Concordia | 2017 |
| $ | McArthur Field | 59.40m | Nathaniel Moses | 2013 |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | Bowen, Brandon | JR | Western Oregon | 44.53m | 44.53m 2017 Willamette Invitational |
| 2 | George, Grant | JR | Alaska Anchorage | 43.10m | 43.10m Beach Invitational |
| 3 | Allen, Kegan | JR | Western Oregon | 44.67m | 44.67m Linfield Open |
| 4 | Barker, Logan | SO | Western Oregon | 40.80m | 40.80m 2017 Cougar Open |
| 5 | Ferry, Corbin | FR | Saint Martin's | 43.02m | 43.02m 2017 Ralph Vernacchia Track & Field Meet |
| 6 | Smith, Zach | JR | Western Oregon | 36.50m | 36.50m Linfield Open |
| 7 | Tafoya, Alberto | FR | Central Washington | 41.17m | 41.17m 2017 Buc Scoring Meet |
| 8 | Adams, Desmond | JR | Concordia (Ore.) | 41.84m | 41.84m 2017 Willamette Invitational |
| 9 | Cross, Forest | FR | MSU-Billings | 41.37m | 41.37m Battlin' Bears/Yellowjacket Open |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | Elder, Brett | FR | Concordia (Ore.) | 48.14m | 48.14m 2017 Willamette Invitational |
| 2 | Ostermiller, Brady | SO | MSU-Billings | 44.92m | 44.92m Tom Benich Invitational |
| 3 | Tafoya, Armando | SR | Central Washington | 51.10m | 51.10m CWU Final Qualifer |
| 4 | Pless, Brandon | JR | Western Washington | 49.23m | 49.23m 2017 Emilie Mondor |
| 5 | Bridge, Caleb | FR | Concordia (Ore.) | 55.68m | 55.68m 2017 Triton Invitational |
| 6 | Cain, Aidan | FR | Central Washington | 46.03m | 46.03m CWU Final Qualifer |
| 7 | Lee, Bryan | SO | Western Washington | 45.20m | 45.20m 2017 Ralph Vernacchia Track & Field Meet |
| 8 | Vea, Cyrius | FR | Concordia (Ore.) | 45.51m | 45.51m 2017 Cougar Open |
| 9 | Chamberlin, Jakob | FR | Concordia (Ore.) | 53.26m | 53.26m Oregon State University High Performance |