Dwain Chambers fully expects to come away from the Weltklasse Biberach international meeting here in southern Germany today with the Olympic 100 metres "A" qualifying standard. Chambers ranks that as his top priority before his solicitors take legal action to try to overturn a British Olympic Association lifetime ban preventing the disgraced athlete from competing in Beijing and at future Games.

Dwain Chambers coasted to victory in the 100 metres at Saturday's Southern Counties Championships at Crystal Palace, though he again fell short of the Olympic qualifying standard.

Andy Baddeley's achievement in joining his fellow Britons Steve Cram, Steve Ovett and Peter Elliott as a winner of the Oslo Dream Mile last Friday night was recognised in yesterday's announcement of the European Cup team, in which he has been offered his distance of choice, the 3,000 metres.

Andy Baddeley rounded off a night on which Tirunesh Dibaba broke the women's world 5,000m record by winning the concluding event of the Oslo Golden League meeting, the Dream Mile, in a personal best of 3min 49.38sec. It was Britain's first victory in the showpiece event since Peter Elliott's in 1991.

At the age of 19, Kenya's Pamela Jelimo has run the 800 metres more than a second faster than 2004 Olympic champion Kelly Holmes ever managed – her time of one minute 54.99 seconds in Berlin on Sunday put her fifth on the all-time world list – and she could go faster still tonight when the Golden League caravan moves on to Oslo.

British athletics' Olympic prospects suffered two further blows at the weekend as Jessica Ennis pulled out halfway through the international heptathlon here because of an ankle injury and Nicola Sanders, the world 400m silver medallist, was reported to have given up the idea of competing in Sunday's Prefontaine Classic in Eugene, Oregon, because of a knee injury.

Jessica Ennis sat on the lush infield of the Mösle stadium here yesterday in oppressive heat that was about to be dissipated by storm clouds rolling in over the mountains which surround this small but famous Austrian border town. In the relative calm before the coming storm of Beijing, this small but famous native of Sheffield was contemplating a weekend of activity that will offer a clear view of her Olympic ambitions.

Becker he isn't, but the other Boris displayed a mean backhand when he knocked up last week with his freshly installed commissioner for sport, Kate Hoey, the first here of the US-style breed. The new London mayor revealed an innovative sporting hand when he opened refurbished tennis facilities at one of Hoey's "action zone" projects in her Vauxhall constituency. Sport, they both emphasised, should cross all political divides. Johnson then hotfooted it for his first meeting as co-chair of the Olympic board alongwith Tessa Jowell, who had organised the Ken Livingstone campaign. 2012 leader Lord Coe says: "It was quite harmonious. This is a very complex project and Boris will take his time to get to grips with it. But he is very supportive." Hoey will not sit on the Olympic board but will spearhead the drive for a legacy of greater investment in grass-roots sport. She will brief Johnson on this before his initial 15-minute presentation to the IOC evaluation commission this week, when he will stress that 2012 must benefit all London, not just regeneration of the East End.

Dwain Chambers yesterday signalled his intention to challenge the Olympic ban imposed on him by the British Olympic Association by seeking to contest the trials for the Beijing Games.

Dwain Chambers will pursue a twin-track policy today as he seeks to make a third comeback to athletics. He will decide whether to seek an Olympic future in the High Court, and then sit down for a long-awaited meeting with UK Sport's anti-doping chief John Scott to offer a chapter-and-verse account of the drug regime that led to him being banned for two years in 2003, bringing with him a lengthy document from supplier Victor Conte.

One near certainty about the Millennium Magic Weekend of Super League games in Cardiff is that Bradford and Leeds will not quite be able to replicate the drama and controversy of last year.

Castleford have insured against having their most prized young asset poached by a bigger club by agreeing a new, four-year contract with Joe Westerman.

Surely the most bizarre sideshow of the rugby league season will be open for business today when Dwain Chambers makes his debut for Castleford. The disgraced sprinter's one-month trial with the Tigers will reach its conclusion with a specially arranged reserve-team friendly against the York City Knights.