Meet our team.
DAMON GILLETTE
General Manager
Denver Native
Started playing tennis at age 6
Played on the ATP World Tour & USTA Pro Circuit
Coached at Advantage Tennis Academy in Irvine, California
Active player in the Men's Open level in Colorado
Founder of Hi-Def Tennis
Member of the USPTA
Philosophy: "Serve +1 and Return +1 keep it simple”
Enjoys working with members to prepare them for their best tennis.
CATRINA THOMPSON
Head Professional
Achieved #1 USTA junior doubles ranking winning
national junior titles on hard courts, clay courts, and grass courts
Won 6 gold, 3 silver, and 2 bronze balls in USTA national junior
tournaments
Graduated from University of Notre Dame in 2007 with a BA degree
Achieved career-high ITA/NCAA #1 doubles ranking
(with twin sister and DTC member Christian Bass) while at Notre Dame
Three-time NCAA Doubles All-American at Notre Dame
Played #1 singles and #1 doubles at University of Notre Dame
Won 2005 Riviera/ITA All-American Doubles Championship
Inducted into the Nevada Tennis Hall of Fame in 2008
USPTA certified tennis instructor
Played on USTA pro circuit winning events in Wichita, Mexico and Houston
Assistant women’s tennis coach Boise State University 2011-2013, Assistant women’s tennis coach at University of Notre Dame 2013-2017
Women’s head tennis coach at University of Minnesota 2017-2023
Enjoys working with players to help assist in reaching their goals and enjoying the game of tennis
TOMMY KOSZOWSKI
Junior Director
Colorado Native
7 years coaching experience
#1 singles and doubles at Regis Jesuit and Whittier College
1st Team SCIAC and academic honors
Co-founder & trainer of Hi-Def Tennis
SAMANTHA “Sam” MARTINELLI
Tennis Professional
Former D-1 #1 singles and doubles
at Yale University
First All American player at Yale
Women’s Tennis history
Achieved a career-high ITA doubles
ranking of #2, #30 in singles
BA degree in History and MS
in Management from Wake Forest
University
4 years coaching experience
Taught at Creek Club, NY, Colorado
Athletic Club, Telluride Racquet Club
DOR AMIR
Tennis Professional
Tel Aviv Native
Ranked #1 in Israel at 17 yrs old
#150 in the world junior rankings
#1 singles at Northern Illinois University
Triple Crown winner in 2018 (Colorado State Open - singles, doubles, mixed doubles - ALL at the Open Level)
AARON ZADEREJ
Tennis Professional
South Bend, Indiana Native
5.0 NTRP rating
Over 10 years of coaching experience at all tennis levels
Teaching style is holistic with a Zen approach
Loves mentoring by instilling both tennis prowess and life lessons
Serves as a shamanic medicine practitioner, helping others step out of their comfort zones
Enjoys cooking, traveling, hiking and spending time with his kids
“Serve +1 and Return +1…keep it simple out there.”
— DAMON GILLETTE, General Manager