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Performance Training Systems (PTS) is a private sports training facility that uses the most effective training and nutrition protocols to achieve your goals. PTS uses a scientifically based training approach to provide the absolute best performance enhancement, athletic development, sport specific strength and conditioning, and personal training programs that are individualized to each client. We value continuing education and take pride in being the most knowledgeable coaches in the industry.

PTS is results driven.


  • Brett Marshall

    MLB Pitcher, Retired

    Bobby is a master of his craft. I was very blessed to be able to play 12 years of professional baseball. The year I trained with Bobby was the strongest I have been on the mound as well as the best I have felt. He truly is an expert when it comes to mechanics, motions, form and technique based on the individual’s sport. Even though I’m now retired and live in Houston (1,000 miles away), I implement Bobby’s workouts in my daily routine. My only regret in baseball is not having the opportunity to train with Bobby sooner.

  • George Kontos

    MLB Pitcher, 2012 and 2014 World Series Champion, Retired

    I have been training sport specifically for 25 years and the past 4 years spent working with Bobby have been my most beneficial yet. Bobby and the rest of the staff at PTS show an unparalleled commitment to working with you to attain your fitness and nutrition goals; from preparing each clients' workout program specifically for their needs, to the attention to detail of every last repetition during each session. My only regret is not having found PTS earlier in my career after experiencing how my body has transformed during our time working together.

  • Charlie Tilson

    MLB, Outfielder

    I came to Bobby after tearing my hamstring and dealing with stress fractures throughout my rehab. He listened carefully to my entire story, assessed my progress and devised a personalized plan to get me healthy. He’s a great guy to work with and extremely knowledgeable in strength training and injury prevention. We worked in three-week phases with more attention to detail than I had ever experienced. Step by step, Bobby got me back to total health and eventually stronger, faster, and more explosive than ever. We trained together for the rest of my career, and I played without any further injuries. I never felt more stable on the field. I highly recommend Bobby and PTS trainers to all athletes looking to get healthy, stay healthy, and get stronger.

  • Graham Pocic

    NFL Offensive Lineman

    When I met Bobby, I had just failed a physical with the Houston Texans. I was looking for someone to help get my shoulder healthy enough to have the opportunity to play again. Bobby exceeded my expectations because of his knowledge of ART, fascial stretching, and background as an athletic trainer I not only saw my shoulder become much healthier but I saw my numbers in the weight room increase for all of my lifts. Two months with Bobby's nutrition plan and spending four sometimes five days a week allowed me to be in the best shape of my life and led me to an opportunity with the St Louis Rams. I have and would highly recommend Bobby to anybody who is looking to reach their athletic and fitness goals.

  • Dylan Rheault

    MLB Pitcher

    Bobby is hands-down one of the most knowledgeable people I have ever come across when it comes to Performance Enhancement. The difference from how my body performs now, compared to when I started training with him in December 2013 is night and day. My second off-season spent training with him and I could not feel more ready going into Spring Training.

    Aside from the Performance part, he's just a great personable guy. Always checking up on how my season is going, and always there if I have any questions about anything. Truly consider Bobby a great friend, mentor, and person!

  • Cameron Schilling

    NHL Defenseman

    My experience with PTS has been nothing but the best since I moved to Chicago.  Their knowledge and expertise in weight training is head and shoulders above anyone else in the Mid West.  Bobby was able to develop and implement a program around a few injuries that I had while still maximizing my strength gains throughout it all.  His knowledge of the body allowed him to write up rehab programs for both my shoulder and foot injuries so I was able to come back stronger than ever.  Training at PTS gives me the confidence that I need going into training camp because I know my body will be in the best shape it will ever be.  That is why PTS is the best in the business!

  • Ovie Mughelli

    NFL Full Back, All Pro, Retired

    One of the hardest thing for a former NFL player to do after he retires is stay in shape.  Whether it is the lack of a big contract as an incentive, a worn down and tired body holding him back or just being tired of working out after decades of basically living in the gym.  After a forced retirement from the Atlanta Falcons due to an MCL injury, all 3 of the previous situations applied to me.  That, along with moving to Chicago during December in one of the coldest winters in years caused me to go from 245 (my playing weight) to 275 (my: I hate looking at myself in the mirror and clothes don't fit weight).

    I desperately needed to get back in shape because of my new job as a sports analyst where I would be in front of the camera al the time.  I tried everything from the Insanity Workout to training by myself in the apartment gym but nothing seemed to work, until I walked into PTS.  I hate to give Bobby too much credit but I have to in this case.  He and his staff single handedly brought me back to not only my playing weight but beyond.  The staff at PTS helped me reach all time lows in weight and body fat percentage and all time highs in strength.  I actually looked forward to coming to workout because the PTS staff provided the perfect balance of intensity and fun.  The workouts were constantly changing so I never plateaued.  The most impressive thing about Bobby and his staff is that they are very well educated in physiology and actually understand how the body works.  They corrected my form on several basic exercises that would always cause me back and knee pain which played a huge part in my progress.

    All in all, whether you are a current or former professional athlete, weekend warrior, CEO or soccer mom Bobby and his crew will get you right and ready to show off your body (for all 3 months of good weather in Chicago).

  • Wendell Jisa

    PTS Client

    I find it difficult to measure the impact Tony has had on my physical and mental health as my personal trainer. The reason I find it difficult is because he has given me a new purpose for health and fitness. In 12 months, Tony has broken my body down and built it back up to a place I have not experienced since my early thirties. I have gone from a 244 pound “Dad Bod” to 196 pounds and now have an athletic physique and a body I am proud to display.

    In addition to making me look better, Tony has motivated and trained me to live better. My unhealthy diet 12 months ago has evolved to focus on the benefits of coupling my workout routines with a laser focus on my nutrition. Tony explains the benefits of a nutrition plan in parallel with what we are trying to achieve with each specific session each workout three days a week. Because of his obsession with combining my training routine with my nutrition plan, my health has exceeded my wildest expectations.

    My strength and balance are at an all-time high. I feel the strength my legs as I walk up a set of stairs, when I pick up packages and play with my children. Because of Tony’s commitment to his clients and his craft, I move differently with ordinary everyday tasks and have a muscle composition I did not think was possible again in my life.

    Tony is an elite trainer who will deliver results, push boundaries and doesn’t accept failure.

BETTER ATHLETES


We train athletes in any sport, but specialize in football, hockey, baseball, lacrosse, speed skating, track & field, basketball and wrestling.

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SPORTS MEDICINE


Prehabilitation and Rehabilitation treatments in conjunction with “Active Release Techniques” prevent injury, heal faster and make your body more efficient.

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PERSONAL TRAINING


PTS coaches use powerful training methods specifically designed to give you the tools you need to lose body fat and dramatically improve body composition.

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BETTER NUTRITION


At PTS, we use the BioSignature Modulation program to optimize sports performance and improve body composition.

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Our Staff and Trainers

  • Bobby DeThomasis, Strength and Conditioning Coach/Athletic Trainer
  • Jessie DeThomasis, Personal Trainer
  • Devon Liebl
  • Jake Faber
  • Adam Wenk
  • Cortez Cross
  • Alexandra White
  • Tony Morales
  • Collin van Eijk
  • Daniel Mallin
  • Matthew Gonzalez
  • Nina May