Testimonials
Athlete Testimonials & Results
Athletes who train with Impact Sports Performance set personal records in nearly every drill at their Combine or Pro Day — including athletes who came to us after disappointing results training elsewhere. Below is the verified testing data behind those results.
Athlete work
Verified performance data
Athletes training in this program have run 40-yard dash improvements of two to three tenths of a second between Day 1 of the program and their Pro Day. Program alumni include:
Tavierre Thomas
(Ferris State / Minnesota Vikings)
Mathew Sexton
(Eastern Michigan / Kansas City Chiefs)
Darece Roberson
(Wayne State / Seattle Seahawks)
Jeff Heath
(Saginaw Valley / Dallas Cowboys)
Devin Funchess
(University of Michigan / Carolina Panthers)
Why athletes
choose Us
Daily coaching, not occasional check-ins — athletes train with Jim Kielbaso every day, not with an assistant.
The coach Michigan Football trusted — Jim Kielbaso was hired directly by the University of Michigan Football Program to prepare its own graduating seniors for the NFL Combine and Pro Day, the first time a Power 5 program brought in an outside coach for this work.
A facility built for one purpose — training happens at Total Sports Complex in Novi, MI, with three turf fields, two weight rooms, on-site nutrition through a personal chef and registered dietitian, and a full medical staff, all under one roof.
Your preparation starts here
Ready to write
your own results?
Every athlete starts with an evaluation. See where your testing numbers stand today and what it takes to move them before your Combine or Pro Day.
