Amir Khan considering shot at WBC title

Amir Khan says he will probably fight only once more at light-welterweight before stepping up a division.

The 24-year-old is now considering adding the WBC title to the WBA and IBF belts he currently holds.

Khan told BBC Radio Manchester: "I wanted to fight [Timothy] Bradley for the undisputed title but he turned it down so the WBC stripped him.

"[Erik] Morales is fighting for that title in September so if he wins Morales could be an option," he added.

The Bolton boxer does have another option though, to fight the IBF's number-one contender Lamont Petersen.

Khan said: "The IBF title I've just won, the mandatory for that is Lamont Petersen so maybe that could be a possibility."

Whoever his next opponent is, Khan is planning only one more fight at 140lbs before moving up to welterweight and closer towards a fight with Floyd Mayweather.

"There may be one or two names left in this division. We'll get this fight out the way and maybe it might have to be that we move up to 147 because there's no one else," he added.

After he beat Zab Judah in their light-welterweight unification fight in Las Vegas Khan expressed a desire to fight American legend Mayweather.

"My aim is to move up the pound-for-pound rankings and to one day be pound-for-pound champion," he said.

"The Mayweather fight is something I'm looking at for the future and it would be huge for me. It would drive me on."

Rebecca Adlington seeks improvement for London Olympics

Double Olympic gold medallist Rebecca Adlington insists she has yet to reach her peak level of performance.

The 22-year-old won her first World Championships title in Shanghai last week, but is still seeking improvement leading into London 2012.

"With the strength of the competition I gained a lot of confidence from the Worlds," Adlington told BBC Sport.

"However, my turns are a weakness, my race tactics need work and I don't quite have enough speed."

Adlington won a gold in the 800m and a silver in the 400m freestyle in China, but failed to reach the semi-finals in the 200m, a result which may prompt her to avoid competing in the shorter distances in future events.

"Although I enjoy it and I love competing in the 4x200m relay with the other girls, I probably need to focus more on the 400m and 800m and do the best that I can in those," added the Mansfield-born swimmer, who won gold in the 400m and 800m at the Beijing Olympics in 2008.

Adlington says she is learning much out of the pool as well, with her latest achievements proving she is now able to cope with the expectations placed on an Olympic champion, something she struggled with in a disappointing World Championships in Rome in 2009.

"I just let the pressure get to me," reflected Adlington.

"It was the first major meet after Beijing and everybody was saying 'oh, she'll win two gold medals again', but I wasn't ready for that level of expectation. I was only 20 and it was a big shock.

"Now I have learnt to deal with it and most of the pressure comes from myself. I've worked with a psychologist and that has really helped because he is someone separate from the sport and who puts things into perspective."

Adlington's improvement in form began to show last year, where she claimed titles at the European Championships and the Commonwealth Games.

However, it is this year's performances which have given her the greatest cause for optimism and she says she is now "more motivated that ever" to achieve her potential.

"Obviously last year was great experience and it's always nice to win medals, but it wasn't against the whole of the world," said Adlington.

"The World Championships are the next best thing to an Olympics and it gives me a great idea of where I am compared to the rest of the swimmers right now."

Should Adlington, as expected, qualify for the 2012 Games then she is almost certain to take time away from swimming following its conclusion.

"After Beijing I wanted to enjoy all of the opportunities that came my way and I tried to balance that with training, but it didn't work because you can't do both," she said.

"So, I will go away, have a little fun, be normal for once and then see if I miss swimming.

"If I don't feel like I can improve or don't love the sport any more then I could retire, but at the minute I absolutely love it and I don't want it to end."

Elena Baltacha defeated in second round in California

British number one Elena Baltacha crashed out of the Mercury Insurance Open, defeated with ease by Poland's Agnieszka Radwanska.

Baltacha was beaten 6-0 7-6 (7-4) in her second round match against the world number 13.

The 27-year-old recovered in the second set by breaking Radwanska but was eventually overpowered.

The match was the only second-round tie to be completed on Tuesday.

In the first round, three seeds fell with number 10 Flavia Pennetta squandering a lead to fall 1-6 6-2 6-2 to fellow Italian Alberta Brianti.

Thirteenth seed Jarmila Gajdosova rarely put up a fight in going down 6-3 6-2 to Russian Alla Kudryavtseva, while number 14 seed Elena Vesnina surrendered 6-1 6-2 against qualifier Marina Erakovic.

The three other seeds in action all progressed with number 11 Maria Kirilenko topping Rebecca Marino 6-3 6-2, 12th seed Sabine Lisicki breezing past Greta Arn 6-0 6-2 and number 15 Sara Errani seeing off Sania Mirza 6-2 6-3.

Wildcard Sloane Stephens made it to the second round with a 6-4 6-2 win over Shuai Zhang, while Tamira Paszek rallied to beat Simona Halep 0-6 6-4 7-5 while Barbora Zahlavova Strycova was a 6-4 1-6 7-5 winner over Chanelle Scheepers.

Kimiko Date-Krumm beat Gisela Dulko 7-5 6-0, Anastasia Rodionova battled past Olga Govortsova 7-6 (7-4) 2-6 6-3 and Ayumi Morita beat Jelena Dokic 6-1 4-6 7-5.

India's Harbhajan and Yuvraj out of England Test series

India have suffered a blow ahead of the third Test against England with confirmation that Yuvraj Singh and Harbhajan Singh will miss the rest of the four-match series through injury.

Spinner Harbhajan has a stomach strain and batsman Yuvraj has a broken finger.

Both were sustained in the second Test at Trent Bridge, which England won with ease to take a 2-0 lead in the series.

Right-handed batsman Virat Kohli will replace Yuvraj, and left-arm spinner Pragyan Ojha comes in for Harbhajan.

Harbhajan was largely ineffective at Nottingham in a match dominated by seamers and batsmen.

But it turned out the world's leading active Test wicket-taker, with 406 victims, was bowling through the pain of what has since been diagnosed as a grade one lower abdominal tear, which will prevent him playing for the next three weeks.

"While Yuvraj Singh's injury may take around four weeks to recover, Harbhajan Singh is likely to recover in three weeks' time," said the Board of Control for Cricket in India (BCCI).

Both players may miss some of the one-day international series against England.

India are still hoping Zaheer Khan, who was able to run without apparent discomfort in training shortly after the end of the match in Nottingham, will be able to return from his hamstring injury to lead the attack again in the third Test at Edgbaston in Birmingham, which starts next Wednesday.

Opening batsman Virender Sehwag was finally due to arrive in England on Wednesday after shoulder surgery.

He is likely to be important for the tourists as they try to rescue a series in which they will lose their status as the world's top Test team, to England, should they lose by two clear matches.

Gautam Gambhir also missed the second Test at Trent Bridge because the elbow injury he suffered in the first Test at Lord's had failed to recover - India also hope the opener may be fit again soon.