Testimonials . . .
"George Kostelis is passionate about goalkeeping, and it’s contagious. His students
learn what it takes to succeed first hand from one of the top goalkeeper coaches in the
country. His attention to detail in the fundamental technical skills is second to none.
Students who train with George are renowned for maximizing their potential."
Mick D’Arcy (2007)
Head Coach Women’s Soccer
Central Connecticut State University
" . . . if my son or daughter was serious about the position, I can think of no one better
than George.  Dedication, desire and the highest of standards easily set George apart
from his colleagues.  He only demands from his players and students what he demands
and expects from himself:  Excellence.  Whether you have the opportunity to work with
George for one session or for several years, be prepared to experience full-throttle
passion in action . . . and be prepared to develop into a top-flight goalkeeper and
person.  "
Steve Branz (2007)
President & Director of Competitive Excellence Goalkeepeing
Former U20 Women's National Team Goalkeeper Coach
"George has been an integral part of my development as a goalkeeper throughout my
entire career. His knowledge of the game and the position is excellent and he is able to
convey that knowledge to all ages. As a younger goalkeeper, he gave me a strong
technical base, and as I developed he taught me the tactical side of the game, as well.
One of the things that I admire most in George is his mentality. The psychology of a
goalkeeper is very different and he understands that. He knows how to get the most out
of his goalkeepers in every situation. Overall, George has been a mentor, both on and
off the field, and the most influential figure in my career."  
Vanessa Phillips-Bosshart (2007)
University of Tennessee
U-21 U.S. Women's National Pool
"George is a passionate teacher with extraordinary communication skills.  His
understanding of the game and his own work ethic makes him an excellent role model
for his students.  Because of George, our son is as enthusiastic about his training
sessions as he is about game play.

George’s intense training sessions are designed to develop technical and tactical skills
that can be transferred to the playing field . This enables the student to critique himself
fairly after a play is made, regardless of the outcome.

Our son has trained with George for 5 years.  George is as knowledgeable and
demanding as he is fair and upbeat.  He is a wonderfully gifted teacher for all age
groups and abilities. "
Connecticut Parents of Goalkeeper (2007)
"Both my son and daughter have trained with George Kostelis over several years.  The
training was not easy as George pushed them both physically and mentally, but both
loved working with him, his passion for the goalkeeper position and his concern about
them as people. With George’s help both became strong technical and fundamentally
sound goalkeepers with their own strong passions for the game enabling them to play
soccer at the travel, premier, high school and college levels.  For someone who is
looking to become a serious goalkeeper, I would highly recommend George Kostelis as
a trainer."   
Connecticut Parents of Goalkeepers (2007)
George Kostelis has been my daughter’s goalkeeper trainer for over eight years!  He
has guided my daughter in many facets of the game--mentally, physically and
tactically which is essential to goalkeeping.  Because of George’s expertise and
ability, he is able to squeeze the absolute “most” out of every player he trains.  Due to
his training, my daughter continues to play at the college level.  George’s
professionalism, knowledge of the game and patience in the development of each
player makes his training unique and gives them that extra “edge” that you won’t find
elsewhere!
Connecticut Parent of Goalkeeper (2008)
In the fall of 2007, our ten-year-old daughter began training with George Kostelis.  
George not only motivated her to perform to the best of her abilities on the playing field,
but his positive attitude also improved her confidence, self-esteem, and team spirit off
the field.  George’s training sessions create a learning environment that is fun, yet
challenging for all ability levels.  He is always encouraging and enthusiastic and the
individual attention and low student/instructor ratio is amazing.  George has a way of
connecting to his students; his coaching philosophy and passion for the game has
attributed to an overall positive experience for our daughter.  He not only teaches the
fundamentals, but also focuses on the conditioning, strength, and mental aspects of the
game, as well.  Our daughter’s skills and enthusiasm for the game of soccer have
improved significantly working with George and we look forward to continuing our
relationship with him for many years to come.
Massachusetts Parent of Goalkeeper (2008)