Hamstring Strain: Preparing for the NFL Combine

A future NFL player rebuilt hamstring strength and speed under pressure to perform at the Combine.

Nick Petroski, DPT, Petroski Physio

Meet the Athlete

Nick Herbig is a standout outside linebacker from the University of Wisconsin preparing for the NFL Combine, an event where performance metrics directly influence draft position, contract value, and career trajectory. His position requires elite-level acceleration, sprint mechanics, rapid deceleration, and powerful lower-body force production.

Nick Herbig

Nick Herbig

NFL Player

What was the challenge?

Approximately two months before the combine, Nick suffered a hamstring strain during training. With limited time before testing, this injury risked not only his combine performance, but his draft position and professional future.

He struggled with:

  • Hamstring weakness and asymmetry

  • Sprinting and acceleration without pain

  • Confidence in high-velocity movement

The urgency of his timeline raised the stakes: every training week mattered.

What was our process?

We approached Nick’s rehab with precision, urgency, and a clear progression strategy aligned to his combine schedule.

Step 1: Precise Assessment

On his first day, we evaluated:

  • Hamstring strength and mobility

  • Rate of force development

  • Sprint mechanics and running gait

  • Symmetry and loading tolerance

Baseline testing revealed only 57 lb of strength in the injured hamstring, well below the demands of high-speed sprinting.

Step 2: Targeted Strength and Load Progression

Nick’s program focused on:

  • Foundational hamstring loading in provocative positions

  • Strength development across full range and speed

  • Pattern-specific strengthening for acceleration and sprinting mechanics

  • Gradual exposure to speed, load, and neuromuscular demand

Once he reached 70 lb of hamstring strength, we progressed from controlled contraction work into speed-focused drills and dynamic force production exercises — always guided by objective testing.

Step 3: Return to Speed and High-Velocity Work

Throughout his rehab, we tracked:

  • Force-plate metrics

  • Rate of force development

  • Sprint capacity and tolerance

  • Velocity thresholds for acceleration and max-speed running

His progression followed a structured timeline:

  • Low-intensity, longer-duration running

  • Top-speed mechanics within tolerance

  • Moderate-to-high-velocity sprinting

  • Full acceleration and deceleration demands

  • Finally, 100% sprint speed without pain

Where is he now?

With one week remaining before the NFL Combine, Nick achieved full-speed sprinting at max velocity pain-free. His performance helped secure a draft position with the Pittsburgh Steelers, selected in the fourth round, higher than projected pre-injury.

He has since gone on to build a successful NFL career.

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