Boxing twins Jamie and Gavin McDonnell added their double-punch power at a competition evening for youngsters at The Fitness Factory ABC, Halfway, Sheffield.
The Doncaster duo celebrated 11-year-old Jessika Dobson 's achievement of winning a core strength competition - a feat which earned her the right to have her name entered on the gym's prestigious Wall of Fame.
She pipped Mia Nicholson Stubbs, 15 and Oliver Fox, 14 years.
Sonia Gavins, head coach, said: "It was an unbelievable effort from all that took part."
The McDonnells offered words in advice and provided answered in a Q&A session.