Disclaimer: As the 2020 current football season still is technically set to proceed as planned in Manhattan on Sept. 5, we will continue the Countdown as normal for now.
- Position: Offensive Line
- Previous College: None
- Projection: Scout Team
- Status: Preferred Walk-On
Marshall Reed Kellner (b. Sept. 21, 1999) is an offensive lineman from De Soto High School who walked on at K-State instead of taking his talents to William Jewell or Central Missouri.