Tom Williams’ journey to Head of Performance and Sport Science for Major League Soccer (MLS) powerhouse, the Los Angeles (LA) Galaxy, began at a crossroads: pursue traditional coaching or medical pathways. As a soccer “Swiss Army knife,” he embraced early sport science alongside coaching, building a career defined by collaboration and innovation. At the Galaxy, Williams is part of a web of support that uses rich data storytelling tailored to stakeholders and players, guiding decisions and infusing value in every encounter. This system drives their three key pillars: winning championships — including their recent record-breaking sixth MLS Cup — developing a robust academy pipeline, and leading innovation. In MLS’s “cultural melting pot,” Williams balances diverse backgrounds and short-term demands like fixture congestion while employing sustainable long-term strategies. With a unique full-time cognitive department and creative approaches like dodgeball warm-ups, he combines trust and ingenuity to elevate performance and presents a blueprint for those exploring emerging sport science. Reach out to Tom on LinkedIn: @tom-williams and X/Twitter: @Williams26Tom | Find Eric on Instagram: @ericmcmahoncscs and LinkedIn: @ericmcmahoncscs Did you know MLS has a newly mandated Certified Performance and Sport Scientist® (CPSS®) role? Engage with NSCA’s Pro Sport Partner, the Professional Soccer Performance Association (PSPA), on social media to learn more: Instagram: @pspa_performance X/Twitter: @PSPA_perform LinkedIn: @professional-soccer-performance-association

This book excerpt reviews the psychological principal of the self-determination theory (SDT) and its role in motivation and how this can be used in a tactical setting.

This article examines ways that personal trainers can take steps in order to effectively reduce the risk of clients suffering a training-related injury.

Growth and maturation are two important processes that occur throughout an individual’s childhood and adolescent years. The purpose of this article is to review the dimensions, proportions, stature, body mass, and maturational events of all female pediatric athletes in general. It also serves to identify how early sport specialization and different modes of training of the female pediatric athlete affects her growth and maturation.

The purpose of this article is to discuss the different opinions regarding the validity of early sport specialization as opposed to diversification, specifically the effect these two methods have on injuries, motor development, skill acquisition, and social and psychological aspects.

This article discusses using the principle of specificity as an important component in tactical training programs to enhance performance, decrease injuries, and improve functional longevity of a tactical athlete.

The variables of an NBA season constantly change, which requires strength and conditioning coaches to adjust accordingly. The success of a program is often influenced by the coach’s ability to combine strength and conditioning principles with common sense and the ability to adjust to the schedule.

This article explores what a facility-level culture may look like, identifies some of the expected benefits of purposely developing that culture, and discusses some misalignment between what coaches say they want the culture to feel like and the message the athletes are likely to receive.

The excerpt from Strength Training for Soccer describes the movements necessary for multidirectional speed.