Home Sports Jamaica wins Men’s 4 x 400m Heat at Rio Olympics Sports Jamaica wins Men’s 4 x 400m Heat at Rio Olympics By Staff - Aug 19, 2016 Jamaica won the Heats of the Men’s 4×400 Relays in 2:58.29 (SB) Advertisement The final fires off at 8:35pm JM time /9:35pm ET tomorrow ShareWhatsAppTweet