Personal
- Parents are Owen and Lisa Allphin
- Married to BYU women's track and field high jumper Cierra Tidwell-Allphin
- Major: Information Systems
- Missionary Service: Served a full-time mission for The Church of Jesus Christ of Latter-day Saints in Tacloban, Philippines (2017-19)
- Also played basketball and football in high school
- Instagram: ransom_a 
Before BYU
- MSHSAA 110H champion (2017)
- MSHSAA 4x100 relay champion (2016, 17)
- Named Missouri All-State 300H (2015, 16, 17)
- Named Missouri All-State 4x200 relay (2015, 16,17)
- Four-time Central Ozark Conference 110H champion
- 14-time conference champion (includes 4x400, 4x200, 300H, 110H)
Stats
| Indoor Personal Bests | 
|---|
| Time | Event | Meet | 
| 8.27 | 60H | 2020 Texas Tech Shootout | 
| 22.09 | 200m | 2020 Texas Tech Shootout | 
| 49.24 | 400m | 2021 BYU Cougar Indoor III | 
 
| Outdoor Personal Bests | 
|---|
| Time | Event | Meet | 
| 11.08 | 100m | 2021 BYU Cougar Invitational | 
| 22.41 | 200m | 2021 UVU Collegiate Invitational | 
| 14.74 | 110H | 2022 BYU Cougar Invitational | 
| 54.15 | 400H | 2021 BYU Cougar Invitational |