To prepare for fights on the ice, Mr. Martin has a boxing coach in Windsor who trains him on the mechanics of throwing and eluding punches.

WSJ: What's Your Workout? A Skater's Edge

Smets opens a door to find Keyshawn Johnson (professional football player), Kerry King (lead and rhythm guitarist of Slayer), Freddie Roach (boxing coach and former professional boxer), Mike Lingerfelt (front tire charger and pit crew champion), Mister Cartoon (tattoo and graffiti artist), and Nathan Fletcher (surf champion) at a mysterious round table.

FORBES: Men Gain an Impressive "Stronger Bond" with Jagermeister

Roach's cramped Hollywood gym, the Wild Card, is now a boxing mecca, and the trainer enjoys the trappings of success a slick Mercedes in the garage, the ability to pamper his mother and a flattering appointment as a U.S. Olympic boxing team coach.

WSJ: Jason Gay: On the Periphery of Boxing Madness; Freddie Roach, Manny Pacquaio; Floyd Mayweather Jr.

Tommy Chaney, Gavin's amateur coach at the Hall Green boxing club in Birmingham, said Gavin's predicament should not be allowed to affect the rest of the British team.

BBC: Medal hope Gavin out of Olympics

As a diminutive 12-year-old, a young Zou Shiming began studying martial arts, but after much pestering he convinced his parents and a local coach to let him take up boxing instead.

WSJ: 'Fists of Gold' Zou Shiming Boxing Match Fires Up China

May has been a month of goodbyes in Australia - Claude Choules, the last living link to combat in World War I and the oldest Australian, the actor Bill Hunter, the Aboriginal world boxing champion Lionel Rose, the spin bowler and coach Terry Jenner.

BBC: May: A month of goodbyes

"When you see an MMA (card) or boxing, they save the biggest bouts for last, " Penn State coach Cael Sanderson said.

WSJ: Penn State seeks 3rd straight NCAA wrestling title

Responsibility for coach Terry Edwards' successful team will now pass to the British Amateur Boxing Association (BABA), which is chaired by Derek Mapp.

BBC: New body to run GB Olympic boxing