Gold -  UNITED STATES, USA

Sanya RICHARDS: We've run the fastest time in 14 years and I'm very proud of it. It was just about team USA. Track and field is so individual that I'm very proud we've got such a team. The team is just phenomenal

Dee Dee TROTTER: It was a tough leg. I tried my best so that we gonna stay out of the jumble. The ultimate goal was to have clean exchanges to get a really fast time. We are just so excited. It is always a pleasure to run with such phenoms.

Mary WINEBERG: I was really excited to run with the team. I definitely had a great year.

Allyson FELIX: It's great to work together. I was so proud of Dee Dee that I didn't want to let down the team. I ran a very strong leg, but I wasn't really sure where I was compared to the others. It was my first time running the relay and it has just been so amazing.

Silver - JAMAICA, JAM

Novlene WILLIAMS: "We did all we could, ran the national record, we cannot ask for more. Silver is great for us. Now I have two medals and so must be totally satisfied. I cannot compare this medals, each is from different race. But I know next year I will be even better and we need to train hard to be also better in the relay."

Bronze - GREAT BRITAIN N.I., GBR

Nicola SANDERS: "The other two in front of me ran pretty fast, but I kind of waited. I had beaten the Russian girl in the 400 metres final, so I knew that I could catch her again. And it worked!
After the heats we knew that the National Record was in reach. But to do it then in the final was just fantastic! It is amazing - I got two medals. This feels really great."