D-Line Coach · LinePlay-verified
Justin Zimmer✓
DL Coach - 7-Year NFL Vet
Houston, Texas
Seven years in the NFL trenches, now developing elite defensive linemen out of Houston with a master's in exercise science behind the work. Lives in the pass-rush details - get-off, hands, spin, ghost, and beating the double team.
Justin Zimmer spent seven years in NFL trenches as a defensive lineman, and he trains the position the way only someone who lived it can. Based in Houston, he pairs the playing career with a master's in exercise science — so the work is built on real sports-science, not just reps and yelling.
His coaching lives in the pass-rush details: get-off, hand technique, the spin, the ghost, and the ugly, unglamorous craft of beating a double team. That last one matters — most D-line training sells sack moves; Zimmer also teaches the downs where two blockers show up.
He works with linemen at every level, from high-school prospects through college and pro players, and co-runs Trench Tune Up — Houston's only OL-vs-DL one-on-one competition, where the trenches go head-to-head on film. The 2025 field produced 150+ college offers.
To train with him, reach out through the form on this page or his Instagram. And if Houston is a haul, the LinePlay coach directory tracks vetted D-line trainers across the country — the D-line side of the directory is a point of pride here.
Get in touch with Justin Zimmer
Want Justin to coach you up? Send your info and we’ll pass it straight to them. No spam — this goes to the coach.
While you’re here
Questions
- How do I contact Justin Zimmer?
- Use the “Get in touch” form on this page — it sends your info straight to Justin, who will reach out directly. You can also reach Justin on their linked Instagram, Facebook, or website above.
- What does Justin Zimmer coach?
- Justin Zimmer is a d-line coach based in Houston, Texas — Seven years in the NFL trenches, now developing elite defensive linemen out of Houston with a master's in exercise science behind the work. Lives in the pass-rush details - get-off, hands, spin, ghost, and beating the double team.
- Is Justin Zimmer vetted by LinePlay?
- Yes — Justin Zimmer is a LinePlay-verified coach, reviewed by founder Coach Jay Freeman (34 years coaching the offensive and defensive line) or a regional captain.
- Who is Justin Zimmer?
- Justin Zimmer is a seven-year NFL defensive lineman turned D-line trainer based in Houston, Texas. He holds a master's in exercise science and specializes in pass-rush technique — get-off, hands, counters — and defeating double teams.
- What is Trench Tune Up?
- Trench Tune Up is Houston's only OL-vs-DL one-on-one competition, co-run by Justin Zimmer and O-line trainer Keith Wagner. Linemen compete head-to-head on film; the 2025 event's participants earned 150+ college offers.
- What levels does Justin Zimmer train?
- High school through pro. High-school D-linemen and their families can inquire through this page; if Houston is too far, the LinePlay coach directory lists vetted defensive-line trainers in other states.