Sports Digest/ Cricket: Opener Alastair Cook scored 80 to guide England to a five-wicket win and their first one-day series victory in Sri Lanka yesterday.

A lacklustre display by Sri Lanka's top order meant they were restricted to a modest 211-9 after winning the toss and England surpassed this with 19 balls remaining. It was England's first series win on the sub-continent since 1987. They have an unassailable 3-1 lead with one match remaining.

England started their run chase positively with Phil Mustard (19) smashing early boundaries before Lasith Malinga grabbed a breakthrough with a cleverly disguised slower ball. Cook and Ian Bell (25) settled down to compile 54 runs for the second wicket, laying the foundations for victory with a workmanlike partnership.

Stadium costs rise by 77%

Olympic Games 2012:The London Olympic Delivery Authority admitted yesterday that the final cost of the main Olympic stadium will be almost twice the original figure forecast in the bid book on which the capital's successful campaign was based, reports Paul Kelso.

John Armitt, the chairman of the ODA, confirmed that the budget for the stadium will now be £496 million, a 77 per cent increase on the £280 million figure included in London's bid document. He also predicted a substantial increase in the final cost of the aquatic centre. The bid book stated that the final cost of the swimming and diving complex would be £75 million, but there are suggestions the final figure seems certain to exceed £150 million.

• Guardian Service

Kürten to challenge test results

Equestrian Sport:Show jumper Jessica Kürten yesterday confirmed that she will be challenging both the results and the procedures involved in the blood testing carried out on the mare Castle Forbes Maike following her win in the Grand Prix at La Baule in May, reports Margie McLoone.

In a statement issued by her German press agent Martina Brüske, Kürten signalled her intent to bring the matter before a tribunal of the International Equestrian Federation FEI) which she and her lawyer, Dr Ulf Walz, are accusing of "arbitrariness and gross procedural error in multiple aspects".

Kuerten added: "The justifiable demand for clean sport is inseparable from the athlete's right to a fair and correct proceeding."

Alinghi make an offer

Sailing: Alinghi took another step yesterday to try to persuade BMW Oracle to drop a lawsuit that could delay the next America's Cup.

BMW Oracle, bankrolled by software mogul Larry Ellison, is suing Alinghi for rules they say would give the Swiss team an unfair advantage in the 33rd America's Cup, due to be sailed in Valencia in 2009.

"Is there a deal? No," said Michel Hodara, chief operating officer of ACM, the group organising the event for Alinghi.

"But there's been an offer and that offer is addressing what we gather is the last remaining hurdle for BMW Oracle to drop their case and enter," he added.

If BMW Oracle and Alinghi cannot settle their differences, a New York court is due to hear the case on October 22nd. It could then drag out for months.

McLaren to play it fair

Formula One:McLaren have ruled out any favouritism in next week's Formula One title showdown in Brazil between championship leader Lewis Hamilton and team-mate Fernando Alonso.

"Following suggestions there might not be equal treatment . . . the team wants to make it absolutely clear that its policy of treating both Fernando and Lewis with complete equality and fairness will continue for the final race," McLaren said on their web site (www.mclaren.com).

"McLaren and Mercedes-Benz will continue to take every step that is within their control to ensure that both Fernando and Lewis will enjoy the same opportunity to win in terms of equality of car, engine, tactics and use of resources."

Hamilton leads Alonso by four points ahead of the title decider at Interlagos on October 21st .