In boxing-mad Puerto Rico, a mini-documentary featuring interviews with famous fighters Miguel Cotto and Oscar de la Hoya, released around a World Championship Boxing Match between Floyd Mayweather and Marcos Maidana, is a must-see video.

But it's so much more. Both men talk about how they prepare for fights, and rely on their "corner," the team of people who support them. Then we see, in her own corner of the ring, cancer fighter Iris Rodriguez. She talks about her breast cancer, the family who supports her, and what motivates her to keep fighting. "That corner gives you strength," she says.

JWT Puerto Rico is known for the agency's inspiring work for Susan G. Komen's "Race for the Cure." In the powerful final shot, Ms. Rodriguez removes a boxer's hooded robe, preparing to enter the ring and continue fighting for her life.