Kelsey Lewis is a current Professional Tennis Coach in Australia, and joins the StMU staff for 2025.

Together with John Thompson, Kelsey runs an elite tennis coaching business called Elite Personal Development. Their professional ideology prioritizes all aspects of player development, including physical training, conditioning and fitness, nutrition, mental training and athletic development, including creating opportunities for national and international travel, tournament scheduling and career pathways for players. 

The Elite Personal Development Team runs and manages two tennis centres in South East Sydney. Kelsey is extremely passionate about Junior Development and creating positive experiences for juniors in tennis. Programs currently run to support young players include an Inclusive Girls Only Squad and Mixed Junior program for young girls and boys aged between 5-10, an intermediate program for players 10+, match play learning opportunities for young players and the Elite squad program with 25+ full time elite tennis players.

Kelsey was a professional tennis player and has obtained a world ranking on three separate tours, the ITF Women's, ITF Juniors and UTR Pro Tennis Tour. She has played WTA events and been ranked within the top 60 female tennis players in Australia.