In the latest Olympics news, defending champion Christine Ohuruogu of Great
Britain has qualified for the semi-final of the women's 400m. She will be
joined by her compatriots Lee McConnell and Shana Cox.

Great Britain's Fran Halsall qualified second fastest for the 50m freestyle
swimming final as she attempts to resurrect her Olympic campaign.

The 400m hurdle trio of Dai Green, Jack Green and Rhys Williams all qualify
for the semi-final.

And there's a lot of great events to look forward to at the weekend. On
Saturday Great Britain will go for gold in rowing's blue ribbon event, the
men's four.

Jessica Ennis will be aiming to realise her status as the golden girl of the
London 2012 Olympic Games by winning gold in the women's heptathlon.

Elsewhere in athletics, Mo Farah will look to enhance his reputation as
Britain's greatest long-distance runner by claiming 10,000m gold.

Team GB men face South Korea in the quarter final of the football
competition as Stuart Pearce's side look to put themselves in unlikely medal

The men's 100m final concludes the action on Sunday as Usain Bolt hopes to
defeat his nearest rival, and close friend, Yohan Blake. 

In the women's 400m final Christine Ohuruogu will then attempt to defend her
Olympic title won in Beijing. 

Ben Ainslie goes into the final race of the men's finn knowing that  should
he finish ahead of Denmark's Jonas Hogh-Christensen he will claim a fourth
sailing gold. 

Attention will also turn to Wimbledon which will be hosting the final of the
men's event on Sunday evening.