Athlete Performance & Training
At Black Diamond Sports & Entertainment Group, LLC, our Athlete Performance & Training division is designed to help athletes maximize their physical performance, athletic development, confidence, and long-term potential both on and off the field. We offer strength & conditioning training, sport-specific performance development, personal training, football position skills training, speed and agility work, and youth summer conditioning camps for middle school and high school athletes. Our programs are built to develop explosiveness, mobility, endurance, discipline, leadership, and overall athletic performance while helping athletes prepare for competitive seasons, showcases, combines, collegiate opportunities, and the next level of competition. Through one-on-one instruction, small group sessions, and team training environments, we focus on creating well-rounded athletes who are mentally and physically prepared to compete with confidence.
Meet Coach Kain
Director, Athlete Performance & Training
Coach Kain Vaughn-Williams leads Black Diamond’s Athlete Performance & Training division, helping athletes build strength, sharpen their skills, and approach competition with confidence.
His training focuses on strength and conditioning, speed and agility, and football skill development, with instruction tailored to each athlete’s experience and goals. Through private and group sessions, Kain emphasizes sound fundamentals, consistent effort, and accountability.
Black Diamond primarily represents professional athletes. Our student-athlete programs adapt the training approaches used with those clients to support age-appropriate development. Kain brings that mission to each session, helping athletes develop habits that support progress both on and off the field.
In-person training is available at our partner training facility, The Fitness Den in Grand Saline, Texas as well as other locations around the DFW and East Texas areas. Mobile training is available upon request.
If you’ve spoken with Coach Kain and know which training option is right for you, purchase your hours below. Coach Kain will coordinate your session dates and times after purchase.
Training Options
First, let's find your training fit! Tell us about your goals, experience, and training needs. Coach Kain will review your information and connect with you for a brief conversation before recommending training hours or a program.
Strength & Conditioning Training - All Sports
GET INFORMATION NOW
Personal Training - All Sports
Football Position Skills Training (all levels)
GET INFORMATION NOW
Group Classes & Training
Build speed, strength, agility, and confidence through in-person group training with Coach Kain. Choose the group for your athlete’s age below. Each $200 monthly membership includes four 60-minute sessions at our partner training facility in Grand Saline, Texas.
Youth Athletic Development | Ages 8–13
200
Every month
Four monthly group training sessions with Coach Kain for ages 8–13. Build speed, agility, strength, and coordination through in-person training in Grand Saline, Texas.
Valid until canceled
Four 60-minute group sessions per month
Ages 8–13
Wednesdays, 6:00–7:00 PM
In person · Grand Saline, Texas
Teen Athletic Development | Ages 14–18
200
Every month
Four monthly group training sessions with Coach Kain for ages 14–18. Build speed, strength, agility, and conditioning through in-person training in Grand Saline, Texas
Valid until canceled
Four 60-minute group sessions per month
Ages 14–18
Wednesdays, 7:00–8:00 PM
In person · Grand Saline, Texas
Youth Athletic Performance — Bullard
200
Every month
Build a stronger athletic foundation with Youth Athletic Performance, a small-group training class for ages 8–13 led by Kain in Bullard, Texas.
Sessions focus on speed, agility, coordination, balance
Valid until canceled
Four one-hour training sessions per month
Sundays, 1–2 PM in Bullard, TX
Speed, agility, and coordination drills
Age-appropriate strength and balance training
Open to all skill levels
How Scheduling Works
Private Training
After purchasing training hours, Coach Kain will contact you to coordinate your session dates, times, and location. If you’re unsure which training option fits your athlete, complete the relevant “Get Information Now” form above before purchasing.
Group Training
Choose the membership for your athlete’s age and complete the enrollment form. Youth Athletic Development (ages 8–13) meets Wednesdays from 6–7 PM. Teen Athletic Development (ages 14–18) meets Wednesdays from 7–8 PM. Each membership includes four 60-minute group sessions per month.
Getting Ready
Group sessions take place at The Fitness Den, our partner training facility in Grand Saline, Texas. Athletes should wear athletic clothing and training shoes and bring water. Review your confirmation email for purchase details.
Why Athletes & Families Choose Black Diamond
Get to Know Us
Black Diamond Sports & Entertainment Group brings together professional sports experience, athlete development, leadership training, and performance preparation under one organization.
Our staff understands the demands athletes face both physically and mentally while pursuing success in competitive sports.
We focus on:
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Athlete development
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Confidence building
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Leadership
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Character
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Accountability
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Long-term growth
With experience working alongside professional athletes, collegiate athletes, and youth athletes, our mission is to help athletes maximize both performance and potential.
