PERFORMANCE IS BUILT, NOT GIVEN
High-performance sport, shaped by experience at the highest level. Tennis coaching, athlete performance and strategic sports consulting — guided by people who know what it takes.
WHO WE ARE
GBZ Sports Group AB is a high-performance sports company founded by Italian tennis coach and former professional player Gianluca Marchiori and Jamaican track and field athlete Britany Anderson. We bring together tour-level tennis experience, elite athletics and a practical understanding of performance under pressure.
Experience that travels from the training court to the world stage.
WHAT WE DO
Individual expertise. A shared commitment to helping athletes and organisations perform at their best.
Individual coaching shaped by professional-tour experience. Technical video reviews, tactical planning, match analysis and training programmes tailored to the player's level and goals.
Explore Gianluca's work →First-hand insight into elite competition, preparation and performance under pressure — informed by the demands of international track and field.
Explore Britany's journey →Connecting athletes, brands and performance-focused organisations through a clear understanding of elite sport, athlete value and long-term development.
Start a conversation →THE PEOPLE BEHIND GBZ
Our perspective is built on lived experience — coaching and competing when the margins matter.
↗01 — TENNIS
CO-FOUNDER · TENNIS
Former professional player and coach with 12+ years of experience, including more than 11 years at Good to Great Tennis Academy in Stockholm. His work spans professional-tour coaching, player development and performance analysis.
Read Gianluca's bio →
↗02 — ATHLETICS
CO-FOUNDER · TRACK & FIELD
World Athletics Championships silver medallist, Olympic finalist and U20 world record-holder in the 100 metres hurdles. Britany brings the athlete's perspective on preparation, resilience and competing on the world stage.
Read Britany's bio →IN ACTION
From elite tennis courts to the track — a closer look at the environments that shape our work.
Coaching · Tour experience · Player development
Elite competition · Preparation · Performance
LET'S TALK PERFORMANCE
For tennis coaching, performance projects, consulting or brand partnerships, connect with the founder whose work fits your goal.