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Coaching Team

Alexander MacKellar and Keeley Phillips (both former collegiate players with over 17 years of combined coaching) founded the Mack Phillips Tennis Academy in 2019. We offer a tennis experience catering to all age and skill levels. We look forward to sharing our passion and knowledge of the sport with you!

Keeley Phillips
Head Coach

Coach Keeley has been playing tennis seriously for over 10 years and coaching for over 8 years. She attended Cedar Ridge High School where she was awarded team MVP and played #1 mixed doubles. After High School she continued her playing career as a member of the women’s tennis team at Concordia University Texas. She graduated in 2020 with a major in Business Administration and a minor in Kinesiology. Coach Keeley’s favorite things about tennis are its ability to bring communities and families together, and the fact that it is a lifelong sport! Her coaching approach is very tailored to the player and their goals; however, she is a firm believer in creating strong fundamentals to prevent injury and allow players to reach their full potential. She has experience working with kids ages 2 all the way to seniors and all skill levels. When she is not on the court, she enjoys running, baking, DIY projects and spending time with her family.

Alexander Mackellar
Head Coach

Coach Alex began playing tennis at age 11 and has been coaching tennis for over 10 years. He attended Belton High School and was a member of their varsity tennis team. After High School, he joined the United States Navy. He spent 2 years in Washington D.C. at the Nation’s capital as a Ceremonial Guardsman. Then, he spent his last 2 years stationed in Bahrain. After the service, he attended the University of Mary Hardin-Baylor where he was a member of the tennis team and graduated in 2019. After graduating, he knew he wanted to follow his passion, tennis, and has been coaching full time ever since. Coach Alex’s coaching style is always adapted to the individual to best suit their needs and goals.

Nikhil Ramachandran

“Coach Nik has been playing tennis competitively for nearly 15 years and has been coaching for almost a decade. He attended Thomas Jefferson High School in Virginia where he earned 2 doubles state titles while also leading his team to 4 consecutive state championships as a captain in both his junior and senior years. Coach Nik went on to the University of Virginia, where he majored in Computer Science and Psychology while continuing his passion for tennis by serving as a 4-year member of UVA’s club tennis team, of which he eventually became president and captain in his final two seasons. Nik is a highly competitive coach with a passion for bringing out the best in each individual. With experience across all levels, he has confidence in his ability to take your game to the next level, no matter your current rating. Off the court, Coach Nik runs his own card-trading business, enjoys watching baseball, cooking, and catching up with friends."

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Lisa Robertson

Lisa was introduced to tennis at the age of 6 by her father. She competed all across the great state of Texas to achieve the USTA level of Super Champ at age 14. She also attended Aledo High School where she claimed regional titles in doubles and singles all four years before going on to play at University of North Texas.
Through competing and coaching, her philosophy has always been “The winner is the player who has the most fun”. Tennis is a lifetime sport. Lisa believes having fun is the key ingredient for fostering a lifelong love of the game while developing skills, strength and growth both on and off the court.

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Connor Teseny

Coach Connor has been playing tennis for 13 years, starting at Lamar Middle School, and moving to McCallum High School where he was varsity all 4 years, and team captain his senior year. He is currently a 4.5 rated competitive player who loves competing on clay. He has privately coached a wide variety of players, from young to old and beginner to advanced, along with groups of juniors through the CTTA. He likes to utilize a simplified and technical approach to teaching the sport, while most importantly keeping things fun. Off court, Coach Connor is an avid birder, wildlife photographer and artist. You can find him hiking, fishing and spending quality time with his friends.

Kayla Peña

Coach Kayla is from Rio Grande City, Texas and has been playing tennis for 13 years. In high school she was a regional qualifier for doubles and a state qualifier for singles. After High School, she continued her career at Concordia University Texas as a member of the women’s tennis team where she was awarded newcomer of the year, conference MVP and received the sportsmanship award twice.

Coach Kayla finished her bachelor’s in Kinesiology last year, is a Certified personal trainer and a certified Corrective Exercise Specialist. She is currently pursuing a master’s degree and will be playing her final year at Concordia.  

Coach Kayla has been coaching tennis for 4 years and has experience working with all age and skill levels. She plays tennis because it has opened countless opportunities for her, and it has taught her many lessons that she can carry/use in her everyday life even outside of the sport. She coaches tennis because she wants the future generations to be able to have access to the same opportunities that tennis has provided her.


Coach Batyr, a lifelong tennis enthusiast who began his journey with the sport at the tender age of 5. Hailing from New York, he quickly rose through the ranks, claiming regional titles in doubles and singles throughout his high school years. Graduating from Kingsborough Community College with a degree in Associate in Science, Coach Batyr's passion for tennis has taken him from the courts of New York to the vibrant tennis community of Austin. With a competitive spirit, unwavering discipline, and a commitment to excellence, Coach Batyr now channels his expertise into coaching, aiming to inspire and elevate players to new heights. Join Coach Batyr on the court and unlock your full potential.

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Ali Abuwala -Returning 8/15

My name is Ali and I am currently a 2nd year architecture student at UT Austin! I’ve been playing tennis since I was 12, starting competitive tournaments around the age of 14. I was a USTA super champ and began my coaching career while high school giving private lessons. For the past two years, I have spent my summers running camps and drills with my former coach and continued with private lessons for players of all age and skill levels. I now play competitive doubles for the UT club team, currently ranked line 3 for the school. My style of coaching relates to each individual player, working with their unique strokes to make them the best player they can be. I value having a balance among all your shots rather than mastering one, and I think it helps create all around players that can face any situation. I hope to continue coaching throughout my college career and beyond as my love for this game has only gotten stronger as the years go on! My favorite player is the undisputed greatest tennis athlete of all time Novak Djokovic!

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Jonathan Darnell

Jonathan Darnell started playing competitive tennis in the 7th grade but has been playing for over 30 years.  He was introduced to the sport at a very young age since his mother was a tennis coach.  He played doubles throughout High School and was a 4-year MVP for the varsity team. He has multiple years of coaching experience with middle school- high school players for multiple different school districts. He has also hosted and led yearly summer camps for players ranging from 1st grade through high schoolers. He has been coaching tennis in some capacity for over 18 years.

Josh Roselius

Hello my name is Joshua Roselius and I have coached tennis for the past four years. I am 22 years old and grew up in College Station, Texas. I started playing tennis at the age of 12 and have been playing/coaching ever since. I was trained by multiple coaches including my father, high school tennis coach, and several college coaches. After I finished up my college tennis journey at the University of Mary Hardin-Baylor, I continued my tennis journey as a coach at The John Newcombe Tennis Ranch (for the past 3-4 years). I have taught adult programs, experienced juniors, and first time juniors. Since January 2021 I have been a full time tennis pro/director on the ranch primarily with the summer/winter junior camps and the year round adult programs.

I am excited to continue my tennis journey and interested in the opportunity to meet people with the same love for the sport

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Hi, I'm Sarvesh and am currently in my Junior year at UT Austin where I am a member of the University's Club Tennis Team. I started playing tennis back in 2018 when I was 15 at Stony Point High School and within a few months was selected as MVP. I played the remaining years of my high school career on the Varsity team and since then I have been training my brother up to play on the high school team as well. My style of coaching focuses on the technical aspect of every shot, trying to achieve power and precision effortlessly. I see every point as a learning experience and enjoy looking back to see what could be done better. I love coaching in general, and look forward to seeing avid players on the court!

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