Originally written on Fox Sports  |  Last updated 9/14/14
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A sixth world title and a possible big-money date with Floyd Mayweather Jr. pale in comparison to what's really on the line for Robert Guerrero each time he steps into the boxing ring. After putting his career on hold to help his wife battle through leukemia, Guerrero is fighting for all those patients waiting for a donor like the one who saved Casey Guerrero's life two years ago. A win on Saturday night in San Jose over Selcuk Aydin (23-0, 17 knockouts) would give Guerrero (29-1-1, 18 knockouts) the interim WBC welterweight title and a bigger platform to encourage people to sign up for bone marrow donor registries. ''That's a huge part of it, letting people know how they can help save people,'' Guerrero said. ''As a professional athlete, I've been blessed to perform in front of millions of people around the world. It's my obligation to go out there and bring awareness and hope to this issue. I don't just fight for myself but I fight for the cause of saving people and bringing aw...
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