Men`s 4x400m preview - IAAF/BTC World Relays Bahamas 2017
(IAAF News)

At the previous two editions of the IAAF World Relays, the men´s 4x400m has been a race to remember as The Bahamas duelled in unforgettable fashion with the US, though eventually had to concede on both occasions thanks to a pair of tactically astute anchor-leg performances from LaShawn Merritt.