Hiroshima and Nagasaki — site of atomic bombings in World War II — are teaming up to make a bid for the 2020 Summer Olympics that will emphasize world peace.

The announcement comes a little more than a week after Tokyo lost its bid to host the 2016 Olympics. Tokyo organizers have not indicated whether they will bid again.

A number of cities already have expressed interest in vying for the 2020 Olympics, including Istanbul, Budapest and Delhi. A host city is expected to be named in 2013, and only one city per country is allowed to submit a bid.

Track and field

Sammy Wanjiru earned a $100,000 bonus for winning the Chicago Marathon with the fastest time on American soil, finishing in 2 hours, 5 minutes, 41 seconds. The Kenyan beat by one second the mark set by Khalid Khannouchi in Chicago in 1999. He also got $75,000 for winning the 26.2-mile race. Abderrahim Goumri took second in 2:06:04. Liliya Shobukhova won the women's race in 2:25:56. American Deena Kastor (2:28:50) was sixth in her first marathon since breaking her foot in the Beijing Olympics.

  • Zersenay Tadese of Eritrea set a course record in winning the World Half Marathon title for the third time in a row. He completed the 13.1-mile road race in Birmingham, England, in 59 minutes, 35 seconds, beating the championship record he shared by 21 seconds. Bernard Kipyego (59:59) was second, followed by
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    American Dathan Ritzenhein (1:00:00). Mary Keitany won the women's race in 1:06:36.

    Golf

    Canadian Chris Baryla won the Chattanooga (Tenn.) Classic for his first Nationwide Tour title, beating Troy Kelly by a stroke. Baryla shot a 2-under 70 for a 19-under 269 total. He earned $90,000. Kelly finished with a 65.

  • Ross McGowan won his first European Tour title, taking the Madrid (Spain) Masters by three shots over Mikko Ilonen. McGowan closed with a 1-under 71 to finish at 25-under 263. Ilonen had a 66.

    Tennis

    Novak Djokovic won the China Open with a 6-2, 7-6 (4) victory over Marin Cilic, and Svetlana Kuznetsova beat Agnieszka Radwanska 6-2, 6-4 in the women's final in Beijing.

  • Jo-Wilfried Tsonga won the Japan Open for his third ATP Tour title of the year, overpowering Mikhail Youzhny 6-3, 6-3 in Tokyo.

  • Todd Martin beat Andre Agassi 6-3, 7-5 in the final of the Cancer Treatment Centers of America Championships in Surprise, Ariz., the 39-year-old Agassi's first tournament on the 30-and-over Outback Champions Series. It was also Agassi's first tournament since the 2006 U.S. Open,

    Horse racing

    Gayego posted a 11/4 length victory over Crowns of Thorn in the $300,000 Ancient Title Stakes at Santa Anita. Gayego ($4.40), a 4-year-old colt ridden by Garrett Gomez and trained by Saeed bin Suroor, ran six furlongs in 1:08.28 and claimed the automatic berth in the Breeders' Cup Sprint on Nov. 7 at Santa Anita.

  • Girolamo, a late-developing 3-year-old trained by bin Suroor, beat Burley's Gold by 1¼ lengths in the $150,000 Jerome Handicap at Belmont Park (N.Y.). A perfect 3-for-3 this season, Girolamo ($3.60) ran one mile in 1:33.81 under jockey Alan Garcia.

    Soccer

    Real Madrid's Cristiano Ronaldo was ruled out for up to four weeks. The Spanish club said Ronaldo suffered a severely sprained ankle while playing for Portugal in World Cup qualifying Saturday.