(L-R) USA's Allyson Felix passes the baton to USA's Jenna Prandini in the qualifying round of the women's 4x100 metres relay athletics event at the 2015 IAAF World Championships at the "Bird's Nest" National Stadium in Beijing on August 29, 2015. AFP PHOTO / GREG BAKER (Photo credit should read GREG BAKER/AFP/Getty Images)
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AFP GREG BAKER