Jamaica into men's 4x100m final, another record for Kenya
Jamaica's Nesta Carter wins a men's 100 metres qualifier at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow on August 10, 2013 - by Franck Fife
There was also a third world record at the Thomas A. Robinson stadium in the Bahamian capital, this time set by the Kenyan men's 4x1500m relay team, mirroring the feat of their female teammates on Saturday.
Earlier Jamaica, led off by veteran relay specialist Nesta Carter, clocked 37.71 seconds as they sought a second sprint relay title after Yohan Blake inspired the team to victory in the 4x200m in a world record on Saturday.
But the United States had a shocking changeover from Trell Kimmons to Rakieem Salaam, for which they were disqualified from their heat which was won by Germany in 38.62sec.
It continued their awful record in the sprint relay: in the last 10 championships (Olympic and world) dominated by Jamaica, they've been disqualified five times, and picked up three silvers and two bronzes.
Britain, with surprise world indoor champion Richard Kilty running the first leg, won the first of three heats in 37.93sec, ahead of Trinidad and Tobago, anchored by 2008 Olympic silver medallist Richard Thompson.
The United States took some solace from their strong women's 4x400m team, who won the event in convincing fashion in 3min 21.73sec.
Third leg Natasha Hastings made the difference after eventual silver medallists Jamaica had threatened, the US team also featuring DeeDee Trotter, four-time Olympic gold medallist Sanya Richards-Ross and Joanna Atkins.
In what was an expected world record tilt, the Kenyan quartet of Collins Cheboi, Silas Kiplagat, James Magut and Asbel Kiprop smashed the previous best in a cool display of controlled running.
The Kenyans clocked 14min 22.22sec for gold, more than 14sec faster than the previous mark of 14:36.23 set by another Kenyan foursome in Brussels in 2009.
The silver medal-winning US team timed 14:40.80 for a new American record, while Ethiopia held off Australia to take bronze in a national record of 14:41.22.