Olympic round-up: news you may have missed...

The former Olympic triple jump champion Christian Olsson has announced his retirement due to injuries, putting an end to his planned comeback at the London Games.

The 32-year-old Swede won Olympic gold in Athens in 2004 but was unable to defend his triple jump title in Beijing four years later due to injuries. He recently hurt his foot in training in the United States, which prompted his decision to curtail his career.

"He doesn't feel as if things are working any more," his manager said. Jonathan Edwards, his former triple-jump rival, tweeted: "Wish my friend and ex competitor the very best for the future, will be sad not to see him in London."

What's coming up...

Friday to Sunday: GB sprint canoeists race against each other this weekend to secure their London 2012 place at the World Cup in Poznan, with reigning Olympic champion Dr Tim Brabants going head to head with young rival Paul Wycherley for Britain's 1,000m single kayak spot. A win would see Brabants defend his title on home water this summer.

Friday: The Olympic torch arrives in the country from Athens.

WHO'S UP?

Savannah Marshall British middleweight beat top US fighter Claressa Shields 14-8 in round two of the women's World Boxing Championships in China. "She [Shields] beat the 81kg world champion, so she's the toughest person I've fought," Marshall, 20, said after her victory. Her lightweight team-mate Natasha Jonas reached the last 16.

WHO'S DOWN?

Jamie Cook The 21-year-old Modern Pentathlete, who has already qualified for the Olympics after his fourth- place finish at last year's European Championship, could finish only 33rd in the World Championship in Rome. "It's back to the drawing board and start again," Cook said after the competition.

Days to go to the Olympics: 73

The men's 73kg judo was won by Azerbaijan's Elnur Mammadli in 2008, when he beat South Korea's Wang Ki-Chun in the final.