A British professor who specializes in cities and urban life has been convicted of damaging luxury cars with graffiti that was surprisingly polite.

Stephen Graham was found guilty Friday of using a screwdriver to scrawl inoffensive words such as "very silly," ''really wrong" and "arbitrary" into the paintwork of vehicles including a Mercedes, an Audi, and a Volvo.

Authorities were working Friday to repair a dike that collapsed amid floods that swamped the Indonesian capital as the waters gradually receded from the main streets of the teeming city.

But more monsoon rains were expected over Jakarta later Friday into Saturday, raising the prospect of fresh flooding, said Fadli, an official at the country's meteorology agency who goes by a single name.

Gertrude "Gussie" Moran, who shocked the modest mid-century tennis world when she took the court at Wimbledon with a short skirt and ruffled underwear, has died at age 89.

Moran had recently returned from a long hospital stay with colon cancer when she died on Wednesday in her small apartment in Los Angeles, said Jack Neworth, a tennis writer who befriended Moran in her final year.

Jupp Heynckes would have liked to stay another year as coach of Bayern Munich but cleared the way for Pep Guardiola to be hired for next season, club president Uli Hoeness told ZDF television.

Later Friday, Heynckes said he had not yet decided whether to retire and confirmed he offered to stay on "if Bayern could not find an adequate replacement."

Tottenham says Brazil midfielder Sandro will miss the rest of the Premier League season following surgery on his right knee.

The 23-year-old Sandro was forced off the field against Queens Park Rangers on Saturday and consultation with Tottenham's knee surgeon has revealed cruciate ligament damage, which will keep the player sidelined for the remainder of the season.

Theo Walcott's drawn-out contract standoff with Arsenal ended Friday with the signing of a lucrative new contract.

The England forward could have left the club for free at the end of the season, but has agreed to a three-and-a-half year deal that sees his salary rise by two-thirds to about 100,000 pounds ($160,000) a week.

A long-delayed restoration of the Colosseum's only intact internal passageway has yielded ancient traces of red, black and blue frescoes — as well as graffiti and drawings of phallic symbols — indicating that the arena where gladiators fought was far more colorful than previously thought.

Officials unveiled the discoveries Friday and said the passageway would be open to the public starting this summer, after the €80,000 ($100,000) restoration is completed.

A lawyer in Germany claims surgeons left up to 16 objects in her client's body after an operation for prostate cancer. She is seeking €80,000 ($106,216) plus costs for the family of the patient, who has since died. Surgical slips such as these are rare, but with millions of operations performed worldwide each year mistakes do sometimes occur.

According to Loyola University in Chicago, citing medical studies, some 1,500 patients in the United States have surgical objects accidentally left inside them after surgery each year. Most of the objects are sponges used to control patient bleeding during long operations. They can lead to pain, infections and other medical complications.

Novak Djokovic has heavily criticized Lance Armstrong's long-delayed doping admissions, saying the seven-time Tour de France winner is a disgrace to cycling and "should suffer for his lies."

At the same time, the No. 1-ranked man in tennis says the drug testing program in his sport is "good" but concedes that for the last six months he hasn't had a blood test which could detect illegal oxygen-boosting agents.

Maria Sharapova defeated Venus Williams 6-1, 6-3 in a lopsided match-up between Grand Slam champions on Friday night to reach the fourth round of the Australian Open.

Sharapova and Williams have 11 majors combined — four for the Russian, and seven for the Williams.