By 
LONDON — Watch live stream of Day 9 at the 2017 IAAF World Championships in London, as Usain Bolt says bye bye to track and field on Saturday.
Watch the live streaming coverage from the championships which will be available on several platforms, including the IAAF official YouTube and Facebook pages.
In addition, NBC Sports will also provide live stream, with the live coverage getting underway at 5:00 a.m. ET with the multi-event. The IAAF will also have live updates, including results and interviews, while live blogging and Live radio is on the dedicated page.
Highlighting the morning session on the penultimate day of action are the semi-final heats of women’s and men’s 4×100 and 4×400 metres relays.
The action will get underway at 5:00 am ET with the Decathlon 110m hurdles before the focus is turned to relay excitements.
At 5:35 am ET, the heats of the women’s 4x100m will get underway, which will see three nation’s from each semi-final heat, plus the next two fastest losers qualifying for tonight’s final.
The United States, Great Britain and Switzerland will lead the charge in heat one, while Jamaica, Germany and Trinidad and Tobago are the favourites to advance automatically from the second semis.
Meanwhile, the men’s segment will start at 5:55 am and will feature Bolt for Jamaica, as he prepares to say good bye.
Bolt and Jamaica will go in heat 2, which will also feature China, Canada and France.
The other semi-final heat will see world champion Justin Gatlin and runner-up Christian Coleman leading the United States team against the host country Great Britain, along with the exciting Japanese side and Trinidad and Tobago.
Both finals will be contested in the evening session on Saturday.
In the meantime, the battle for qualifying places in the men’s and women’s 4x400m relays also take place in the opening session on Day 9.
Heat 1 of the women’s race will entertain heavy favourites the United States, which will take on Great Britain, France and Australia.
Another strong gold medal contender, Jamaica, the defending champion, will lineup in semi-final two.
The Caribbean nation which had three women in the 400m final, will battle with Germany, Italy and Ukraine.
In the men’s race, Jamaica, the Bahamas and Poland will go in the first semis, while the United States, Botswana, Great Britain and Trinidad and Tobago, will race in the second semi-final.
