Farah shines on return to Olympic Stadium
Mo Farah produced a commanding performance to win the men's 3000m at the Anniversary Games in London, moving well clear of the field in the final lap before crossing the line with his arms outstretched.
It was a personal best time of 7 minutes 36.85 seconds for Farah, who now turns his attention to the August's World Championships.
"This is where I love to run and last year at the Olympics was a really big year for me," Farah told the BBC after his win. "This is where I made my name.
"Each time I race I want to make my country proud. I am honoured to represent my country. Tomorrow I'll go to St Moritz to train ahead of the World Championships and hopefully I'll get on the podium there."
Jessica Ennis-Hill stepped up her bid to be fully fit for the World Championships by finishing fourth in the 100m hurdles at the Olympic Stadium.
The Olympic heptathlon champion only kicked off her season last week in a meeting at Loughborough after suffering from ankle problems - and competing for the second time since her gold medal at London 2012 the golden girl of British athletics recovered from a poor start to finish fourth in the hurdles with a time of 13.08 seconds. Olympic champion Sally Pearson took the win with a time of 12.65s.
"This was very nerve-wracking. It was my first race back and I couldn't prepare as best as I wanted. I was disappointed with my time," Ennis-Hill said after the race - with the crowd at London's Olympic Stadium giving her a great reception.
"I'm lacking speed work at the moment having just started training this week. I'm going to have a chat with my coach and try and put things right for Moscow."
It was a second win of the weekend for Usain Bolt, who guided the Jamaican team [Racers Track Club] to victory in the men's 4x100m relay. Bolt stormed to the finish unchallenged when running the anchor leg, but the race was tarnished with several teams - including Great Britain - dropping the baton.
"It was not a full team but it's our first run-out as as team and we're close to Moscow now so we wanted to run fast to see where we're at," Bolt said. "It was good. It's magnificent to be here, it feels just like the Olympics, the energy is incredible.
"I cant believe it, I seriously can't - it's beautiful. I can't explain what it gives you as an athlete. I'll go back to training and then Moscow. We'll look at the tapes and figure out what needs to get done."
Christine Ohuruogu aided her preparation for the upcoming Championships in Moscow with a season's best time of 50.00s to win the women's 400m. The Brit appeared to tire towards the end, before kicking on to take victory in front of her home crowd.
"I didn't want to lose on home ground," Ohuruogu said. "I wanted to give a good performance. A win's a win, but this is not where it ends for us and we will do a bit of tinkering and see where we go from there."
Olympic champion Shelly-Ann Fraser-Pryce blazed to victory in the women's 100m with a time of 10.77s, ahead of London 2012 silver medallist Carmelita Jeter.
Chris Tomlinson could only finish fifth in the men's long jump, flying the flag for Britain after Greg Rutherford's withdrawal through injury.
Elsewhere, Olympic champion Allyson Felix won the women's 200m but it was heartbreak for fellow gold medallist Aries Merritt in the men's 110m hurdles - he hit the barrier leaving David Oliver to clinch victory ahead of Brit Will Sharman, who ran a personal best.
Britain's b>Katarina Johnson-Thompson won the women's long jump with a distance of 6.46m, with Ennis-Hill finishing eighth in that event.