Olympic long jump champion Greg Rutherford finished third in his first Diamond League meeting of the season in Shanghai.
Christine Ohuruogu insists she will be attacking the new season with renewed vigour.
Katarina Johnson-Thompson insists she is not feeling the pressure despite being labelled as the heir apparent to Jess Ennis.
Peter Eriksson has resigned as head coach of British Athletics and will return to Canada for personal reasons.
Former Russian cross country champion Yekaterina Shlyakhova has been banned for two years after failing a drugs test.
Britain's Isobel Pooley is feeling good ahead of a busy sumer in 2013 after the agony of missing out on the London Olympics.
Sally Pearson is unlikely to race until July after re-injuring her hamstring but should be fit to defend her world title.
Christine Ohuruogu claimed third at the IAAF Diamond League in Doha as Allyson Felix was edged out by Amantle Montsho.
Kenya's Olympic champion David Rudisha worked hard to see off Ethiopian teenager Mohammed Aman in the 800 metres in Doha.
Former Olympic high jump champion Stefka Kostadinova has been re-elected as the Bulgarian Olympic Committee chairwoman.
American Tyson Gay ran an impressive 9.86 seconds to win the 100m in the Jamaica Invitational World Challenge.
Results from the World Challenge Meeting in Tokyo on Sunday.
Turkey's Olympic champion Asli Cakir Alptekin faces a lifetime ban after being charged with another doping offence.
Paralympic champion Richard Whitehead is training for what he believes will be his greatest challenge yet.
Six-time Olympic gold medallist Usain Bolt has been ruled out of Saturday's Jamaica International Invitational meeting because of a slight hamstring strain.
Olympic discus silver medallist Darya Pishchalnikova has been given a 10-year doping ban.