Ukraine's Oleksandr Usyk, right, fights Bulgaria's Tervel Pulev in a heavyweight 91-kg semifinal boxing match at the 2012 Summer Olympics, Friday, Aug. 10, 2012, in London. (AP Photo/Patrick Semansky)
Ukraine's Oleksandr Usyk, right, fights Bulgaria's Tervel Pulev in a heavyweight 91-kg semifinal boxing match at the 2012 Summer Olympics, Friday, Aug. 10, 2012, in London. (AP Photo/Patrick Semansky)