SB ATHLETES
SB Sport Management work with athletes who are redefining what’s possible in their sport, showcasing their talent, and unique personalities. They inspire others both on the field and beyond.
Sinead Bent
HYROX
Sinead Bent is an Elite 15 HYROX athlete who made a huge impact in her debut season. She finished 4th in the Elite 15 Solos at the 2025 World Championships in Chicago and claimed 2nd in the Elite 15 Doubles. Alongside those podium performances, she broke the Open World Record and set the Great British Record for a Pro Solo HYROX. Sponsored by MyProtein, RAD and Gymshark, Sinead is quickly becoming one of the sport’s most exciting athletes, combining a fun, outgoing personality with a fierce competitive edge that makes her a standout both on and off the race floor.
Alfie Manthorpe
Running
Alfie Manthorpe is a Great Britain international who has represented his country multiple times across road and track. On his half marathon debut, he ran an incredible 1:02, and his 10k best of 28:12 places him 17th on the UK all-time list. Away from racing, Alfie has tested his endurance on unique challenges, including running across Iceland in a team relay with Represent 247. Sponsored by Represent 247, MyProtein and Coros, Alfie pairs world-class performances with a sharp eye for content, making him one of the most exciting and social media–savvy athletes in British running. Now turning his focus to the marathon, he’s aiming to make an impact over the sport’s most iconic distance.
Graham Halliday
HYROX
Graham Halliday is an Elite 15 HYROX athlete who has competed at the last three Elite 15 World Championships, cementing his place among the very best in the sport. Known for his consistency and relentless drive, Graham has built a reputation as the hardest-working athlete in any room he steps into. Sponsored by Adidas, MyProtein and Built for Athletes, he continues to push the limits of his performance, bringing a blend of discipline, resilience and competitive fire to every race.
Marc Dean
HYROX
Marc Dean is a HYROX athlete and former doubles World Champion, now living his dream as a full-time professional. Originally an electrician from Wigan, he balances his family life with a relentless pursuit of sporting excellence. His journey has been powered by consistent hard work and the support of his sponsors — Represent 247 and Marchon. With exciting times ahead, Marc continues to push his limits and inspire those around him with his dedication and passion.
Becky Briggs
Running
Becky Briggs is a 2:29 marathon runner who has represented Great Britain multiple times and is constantly pushing to discover her full potential. A former U23 European record-holder for the marathon, Becky combines the credibility of an elite athlete with the exposure and creativity of a content creator. Based in London, she is deeply embedded in the UK running culture and is known for her approachable, fun personality, inspiring others both on the roads and through her engaging online presence.