Meet our Staff
Michael Zatsiorsky - Head Teaching Professional

Michael hails from the former USSR and has been at the club for over 15 years. He has been our Head Tennis Pro since 2002.

Michael played competitive tennis in the USSR and ranked as high as 5th amongst juniors and 61st amongst adults. Michael received a Bachelor’s degree in Exercise Sports Science specializing in tennis from Moscow University as well as a Master’s of Science Degree from Pennsylvania State University.


Stephen Ferris - Tennis Coordinator- Assistant Pro

Stephen joined us in the tennis department as part owner and tennis coordinator in May of 2005. Stephen graduated from Babson in 1989 with a degree in marketing. Stephen competes in USTA level tournaments and has recently finished the year ranked as high as #4 in New England in Men’s 35 and over singles and has also finished the year ranked #20 in the nation in the same category.

As well as having an extensive tennis resume, Stephen was an avid lacrosse player who played nationally and coached at the collegiate and high school level. If you are looking to get involved in tennis programs, Stephen is the person to talk to.

Stephen has been the coach of the 2016 State Champion Westboro High Boys Tennis Team since 2011.


Christine Roginski - Assistant Head Pro

Chris has been a teaching professional at the club since 2000. Prior to that, she was a tennis pro at another area club for 13 years. Chris is USPTA and USPTR certified and frequently attends USPTR seminars to keep current and get fresh ideas.

Chris is a former elementary school teacher with a Masters in Reading Specialization. Chris is a member of the United Racquet Stringers Association and is a NTRP Verifier Level 1. She has also attended USPTR Specialty Courses in Teaching Munchkins, Drills and Skill Building, Advanced Teacher Training and Coaching, Doubles Course with Pete Collins and Teaching Juniors.


Tigran Martirosyan - Assistant Head Pro

Tigran is a USPTR Level 1 certified instructor. He is a #1 Davis Cup player for his native country of Armenia. While playing for the University of Kentucky, he achieved the ranking of #3 in the nation and was chosen to be an All-American. He also won many collegiate individual tournaments as a member of the UK team.

In the fall of 2007, he received an MBA degree from Eastern Kentucky University. While studying at EKU, Tigran was an assistant coach of the men’s and women’s tennis teams. Tigran has played professional tennis and has reached a career high ranking of 360. He has had numerous wins over players ranked in the top150 in the word (Jan Hernych, Donald Young, Ryan Sweeting, Michael Yani).

Tigran was born in Yervan, Armenia and moved to the United States when he was 18.


Dave Ndinya - Senior Pro

Dave began training local competitive junior players in 2004. After undergraduate college he established a clientele of highly competitive junior students who traveled from multiple adjacent towns to be part of the intensive programs he delivered. During this time he decided to head back to school to pursue his graduate studies graduating with an MBA in finance at Clark University. From 2011 to 2013, Dave gained invaluable experience directing and overseeing the tennis program at another area club were he revamped and introduced  many kids to the game of tennis.
Dave uses modern methods mixed with traditional techniques to increase players’ levels quickly and easily. Through personal interaction and a passion for all aspects of tennis, players and parents are getting proper guidance and development.


Jason Dono - Assistant Pro

Jason is a graduate of Roger Williams University where he received his degree in Business Management. While at school, Jason played four years of varsity tennis. Jason has been on staff since 2008 and teaches students of all ages and abilities. In addition to his responsibilities at the club, he has also been the boys tennis coach at Assumption College and Westboro High School.

Jason still enjoys playing competitively on Westboro’s CMITA team.

He is USPTA/PTR certified as well as being a USTA official.


Dan Flanigan - Senior Pro

Dan is a WTA Tour Certified Coach with over 25 years of professional experience developing, training and travelling with nationally ranked juniors, collegiate players and world class professionals. Dan has coached at all four Grand Slams having 7 players attain world rankings including a top 100 player.

On the collegiate level, Dan has trained multiple players who have achieved NCAA All American status. As a player, Dan was nationally ranked in both NCAA Division 1 and USTA Juniors.  He is a two-time Massachusetts State High School Champion. Dan was also the recipient of the prestigious Cross Sportsmanship Award given at the Intersectional Team Championships.


Kelly Day - Senior Pro

Kelly joined the tennis staff at The Westboro Tennis and Swim Club in the summer of 2014. Prior to coming to Westboro, Kelly worked at another area club developing a very successful 10 and under program. In addition, Kelly is the Holliston Boys Varsity Tennis Coach. Kelly is a PTR certified professional as well as a Cardio Tennis professional.

Kelly still actively competes. She was a member of the 2013 USTA New England 8.0 mixed doubles championship team that advanced to Nationals. She has been part of several USTA 4.0 and 4.5 teams and currently plays for Westboro’s top DBH team.

Kelly has a degree in Elementary Education from the University of Maine and spent several years teaching 2nd grade before pursuing her passion for tennis.


Nick Deangelis - Assistant Pro

Nick has been a teaching professional at the club since 2013, but been teaching tennis since he was 18. He is USPTA certified and enjoys teaching all ages and levels. During the summer, Nick taught with Tenacity, a non-profit organization that teaches tennis and reading to at-risk children in Worcester.

Nick grew up in Northboro playing for Algonquin, where he has now been assistant coach of the boy’s varsity team since 2014. He went on to play in college where he and his team won 2nd place in the country at the NJCAA Div. III Nationals. As a previous physics major, Nick uses his knowledge of the subject to find ways to improve efficiency in his students strokes and movement. Nick loves the sport, and is still competing regularly. His passion for the game is obvious, whether it be teaching or playing, he enjoys being on the court as much as possible.


Dermot Caffrey - Assistant Pro

Dermot was born in Mullingar, Ireland and has been a resident of Southborough, Massachusetts since 2013. As a junior player, Dermot was ranked in the top 10 and was the Irish Schoolboys Champion.

Dermot joined the teaching staff here in 2014.  Previously, he taught at the John McEnroe Tennis Academy in New York and Camp Vega in Maine.  He was the Natick High School Boys tennis coach from 2013-2014.

He attended the Australian Open, the French Open, Wimbledon and the US Open (as a spectator).

His hobbies include fishing, hunting, and laughing.

I.T.F tennis Ireland coaching certificate

U.S.P.T.A. coaching certificate


Brent Gruno - Senior Pro

Brent Gruno, originally from St. Louis, Missouri, has over 15 years of experience teaching tennis and over 25 years of playing competitively. He was previously Director of Tennis at the YMCA in Edwardsville, Ill. He has worked with all ages and levels from beginners to professionals including NCAA Division 1 players.  Brent coaches the Women’s DBH I, II and IV teams.

Brent played collegiately at Jefferson College, where the team finished NJCAA Div. 1 17th in the nation. Since 2000 Brent’s competitive play includes Missouri State Champion (twice), U.S. Tennis Association Missouri Valley District and Sectional Champion and WTT National Champion. In 2009 he was ranked #23 nationally in men’s 35s. Most recently he was ranked in the top 10 in the New England Section in multiple divisions.


Dennis Okoth - Assistant Pro

Dennis is originally from Nairobi, Kenya. He played Davis Cup tennis for his country from 2010-2012. Dennis played 4 years of Varsity tennis at the University of Charleston. He was a 2 time All-American and a 4-time All-conference team. His junior and senior years, he was team captain.

Dennis has been teaching tennis since 2010 joining the tennis staff at Westboro in 2015. Prior to coming to Westboro Tennis & Swim he taught tennis at the Kings Grant Racquet Club on Cape Cod. He enjoys teaching players of all ages and all levels.

Certification: ITF (International Tennis Federation) level 1

Jonathan (JT) Tyler - Senior Pro

JT is originally from Rindge, New Hampshire. He joined the teaching staff at Westboro Tennis in May of 2016.

JT, is an all-round, multi-talented athlete. In addition to tennis, he has received many awards in baseball, basketball and track and field. A USPTA certified pro, JT has been coaching for 11 years. For the past 6 years he has specialized in working with advanced juniors, helping them to maximize technique and tactics.

He also enjoys working with competitive adults – coaching last year’s CMITA Mens B Division Champs. Before coming to Westboro, JT was the Director of High Performance Tennis at another area club.


Pete Mainelli - Assistant Pro

Pete is originally from Providence, Rhode Island but moved to Florida as a child where he learned to play tennis. While in Florida, Pete played high school tennis and went on to play USTA tournaments where he achieved a top 50 ranking in the open division and a top 15 ranking in the 4.5 division.

After living in Florida, Pete moved to Vermont where he worked for the Cliff Drysdale tennis school at The Stratton Mountain Resort. He now resides in Orange, Mass. and joined the staff at Westboro Tennis and Swim in the summer of 2016.

Pete is USPTA Level 2 certified


Carolyn Chandley - Tennis Fitness Specialist

Carolyn is a graduate of Holy Cross College in Worcester. She starting playing tennis at a young age and was a member of Westboro’s Junior Tournament Training Program while in high school. She went on to play four years of varsity tennis in college.
Carolyn became a certified personal trainer in 2008 when she began working at the YMCA and most recently became a Certified Strength and Conditioning Specialist (CSCS). She is also a USAW-Level 1 coach as well as a certified Speed and Agility Coach. Carolyn still competes on a Women’s USTA 4.5 team as well as on Westboro’s DBH and CMITA teams.
As a trainer, Carolyn enjoys motivating people of all ages and abilities to do things they never thought possible. She particularly enjoys training as well as coaching athletes in their quest to reach their personal goals.


Zach O'Leary

Zach is originally from Westborough, MA and played 3 seasons at WHS from 2004-2008 winning a doubles team and individual district championship. In 2005 he attended Bollettieri Tennis Academy for his sophomore year of high school.

After high school he attended Springfield College and earned his degree in Sports and Recreation management. While at Springfield College, he started all 4 years on the tennis team and earned honors in All Conference doubles and individual team wins.

He comes to WTSC from The Longfellow club and most recently Paxton Tennis and Fitness. He worked at Paxton for 4 years in roles as Tennis Director and Junior Development Director. Zach is USPTR certified and the current assistant coach for Assumption College. He enjoys yoga, meditation, golf, and fitness when he is not on the court.

Westboro Tennis & Swim Club is located in Central Massachusetts, convenient to surrounding towns such as Northborough, Southborough, Hopkinton, Ashland, Marlborough, Grafton, Shrewsbury, Worcester, Framingham, Holliston, and all other Central Massachusetts and Metro West communities.