MarathonG: Zhou Chunxiu, ChinaS: Gete Wami, EthiopiaB: Catherine Ndereba, KenyaLocal training gives hosts the home-smog advantage.
100-meter hurdlesG: Lolo Jones, U.S.S: Susanna Kallur, SwedenB: Damu Cherry, U.S.Ex-LSU star Jones won points title as world's top indoor athlete last winter.
400-meter hurdlesG: Melaine Walker, JamaicaS: Tiffany Ross-Williams, U.S.B: Huang Xiaoxiao, ChinaTwo-time world champion Jana Rawlinson is out after foot surgery.
4-100-meter relayG: JamaicaS: U.S.B: BelgiumU.S. and Jamaican women have run the year's 34 fastest 100 times.
4-400-meter relayG: U.S.S: JamaicaB: RussiaOnly once (1920) has the U.S. run in an Olympic final and not won a medal.
20-km walkG: Olga Kaniskina, RussiaS: Tatyana Shemyakina, RussiaB: Ryta Turava, BelarusKaniskina's world mark at nationals wasn't ratified; no international judges were there.
High jumpG: Blanka Vlasic, CroatiaS: Ariane Friedrich, GermanyB: Elena Slesarenko, RussiaVlasic was named for the city of Casablanca.
Long jumpG: Maurren Higa Maggi, BrazilS: Lyudmila Kolchanova, RussiaB: Tatyana Lebedeva, RussiaMaggi is married to Formula One driver Antonio Pizzonia.
Triple jumpG: Yargelis Savigne, CubaS: Hrysopiyí Devetzí, GreeceB: Olha Saladuha, UkraineSavigne's manager is high jump world-record holder Javier Sotomayor of Cuba.
Pole vaultG: Yelena Isinbayeva, RussiaS: Jenn Stuczynski, U.S.B: Monika Pyrek, PolandIsinbayeva has set 12 world outdoor records.
Shot putG: Nadezhda Ostapchuk, BelarusS: Valerie Vili, New ZealandB: Nadine Kleinart, GermanyOstapchuk avenged her loss to Vili at '07 worlds with a win at the IAAF final.
DiscusG: Nicoleta Grasu, RomaniaS: Yarelis Barrios, CubaB: Aretha Thurmond, U.S.
Hammer throwG: Aksana Miankova, BelarusS: Yipsi Moreno, CubaB: Martina Danisová-Hrasnová, SlovakiaFavored in '04, Moreno fouled on four throws and settled for silver.
JavelinG: Barbora Spotáková, Czech RepublicS: Christina Obergfoll, GermanyB: Osleidys Menéndez, CubaSpotáková was an All-America at Minnesota.
HeptathlonG: Tatyana Chernova, RussiaS: Hyleas Fountain, U.S.B: Lyudmila Blonska, UkraineWide open after withdrawal of Sweden's dominant Carolina Klüft (who'll only long-jump and triple-jump).
MenG: Javier Gómez, SpainS: Bevan Docherty, New ZealandB: Frédéric Belaubre, FranceGómez was once barred from racing because of an abnormal heart valve.
WomenG: Emma Snowsill, AustraliaS: Vanessa Fernandes, PortugalB: Emma Moffatt, AustraliaSnowsill won '03 worlds but was left off Athens team.
MenIndoorG: BrazilS: RussiaB: PolandImproved U.S. has a shot at a medal.
BeachG: Rogers & Dalhausser, U.S.S: Ricardo & Emanuel, BrazilB: Marcio Araujo & Fabio Luiz, BrazilAt 6' 9", Phil Dalhausser has seven inches on Todd Rogers.
WomenIndoorG: BrazilS: ItalyB: RussiaThis would be first gold for Brazil's women's team.
BeachG: May-Treanor & Walsh, U.S.S: Tian & Wang, ChinaB: Branagh & Youngs, U.S.Returning champions have a 96-match winning streak.
MenG: SerbiaS: CroatiaB: SpainNewly separated Serbia and Montenegro may win medals.
WomenG: RussiaS: U.S.B: AustraliaU.S. won '07 worlds then lost to Russia in World League final.
Men56 kg (123 lbs.)G: Eko Irawan, IndonesiaS: Li Zheng, ChinaB: Hoang Anh Tuan, VietnamTurkish great Halil Mutlu canceled his comeback.
62 kg (136.5 lbs.)G: Zhang Xiangxiang, ChinaS: Im Yong Su, North KoreaB: Oscar Figueroa, ColombiaChina chose Zhang though he's No. 6 in national rankings.
69 kg (152 lbs.)G: Shi Zhiyong, ChinaS: Vencelas Dabaya, FranceB: Kim Chol Jin, North KoreaWorld champ Zhang Guozheng did not make Chinese team.
77 kg (169.5 lbs.)G: Li Hongli, ChinaS: Gevorg Davtyan, ArmeniaB: Oleg Perepechenov, RussiaBulgaria's Ivan Stoitsov (box) is world champ.
85 kg (187 lbs.)G: Andrei Rybakou, BelarusS: Izzet Ince, TurkeyB: Valeriu Calancea, RomaniaRybakou won '07 worlds by an astounding 46 pounds.
94 kg (207 lbs.)G: Roman Konstantinov, RussiaS: Szymon Kolecki, PolandB: Yoandris Hernández, CubaKonstantinov beat these two rivals on final lift at '07 worlds.
105 kg (231 lbs.)G: Andrei Aramnau, BelarusS: Dimitry Klokov, RussiaB: Dmitry Lapikov, RussiaAllowed a total of six lifters, Russians are doubling up here.
105+ kg (231+ lbs.)G: Hossein Rezazadeh, IranS: Viktors Scerbatihs, LatviaB: Matthias Steiner, GermanyIranian TV carried Rezazadeh's wedding live in 2003.
Women48 kg (105.5 lbs.)G: Chen Xiexia, ChinaS: Pramsiri Bunphithak, ThailandB: Estefania Juan, SpainDeep China could replace Chen with Yang Lian -- and still win.
53 kg (116.5 lbs.)G: Nastassia Novikava, BelarusS: Yu Wei Li, Hong KongB: Wandee Kameaim, ThailandLimited to four women's entries, China skips this class despite having world's two best.
58 kg (127.5 lbs.)G: Qiu Hongmei, ChinaS: Marina Shainova, RussiaB: O Jong Ae, North KoreaChina might replace Qiu with '04 champ Chen Yanqing.
63 kg (138.5 lbs.)G: Liu Haixia, ChinaS: Svetlana Tsarukaeva, RussiaB: Meline Daluzyan, ArmeniaLiu is reigning world champion.
69 kg (152 lbs.)G: Oxana Slivenko, RussiaS: Liu Chunhong, ChinaB: Nazik Avdalyan, ArmeniaSlivenko won world title in 2006 at age 19.
75 kg (165 lbs.)G: Nadezda Evstyukhina, RussiaS: Hripsime Khursudyan, ArmeniaB: Lidia Valentin, SpainRussia leaves home world-record holder Natalia Zabolotnaya.
75+ kg (165+ lbs.)G: Jang Mi Ran, South KoreaS: Olha Korobka, UkraineB: Mariya Grabovetskaya, KazakhstanU.S.'s Cheryl Haworth could win her second Olympic medal.
Men's Freestyle55 kg (121 lbs.)G: Besik Kudukhov, RussiaS: Radoslav Velikov, BulgariaB: Henry Cejudo, U.S.B: Andy Moreno, CubaCejudo was training partner for ex-Olympian Patricia Miranda.
60 kg (132 lbs.)G: Yandro Quintana Ribalta, CubaS: Mavlet Batirov, RussiaB: Anatolie Guidea, BulgariaB: Seyed Morad Mohammadi, IranQuintana Ribalta gave up only one point en route to '04 gold.
66 kg (145 lbs.)G: Otar Tushishvili, GeorgiaS: Ramazan Shahin, TurkeyB: Irbek Farniev, RussiaB: Geandry Garzón Caballero, CubaU.S.'s Doug Schwab is medal threat.
74 kg (163 lbs.)G: Buvaysa Saytiev, RussiaS: Ibragim Aldatov, UkraineB: Aliasghar Bazrighaleh, IranB: Chamsulvara Chamsulvarayev, AzerbaijanColorful U.S. hope Ben Askren vows to win gold.
84 kg (185 lbs.)G: Georgy Ketoev, RussiaS: Zaurbek Sokhiev, UzbekistanB: Revaz Mindorashvili, GeorgiaB: Reza Yazdani, IranKetoev replaces two-time world champ Sajid Sajidov for Russia.
96 kg (211 lbs.)G: Shirvani Muradov, RussiaS: George Gogshelidze, GeorgiaB: Saeid Abrahimi, IranB: Daniel Cormier, U.S.Cormier's infant daughter, Kaedyn, died in '03 car accident.
120 kg (264 lbs.)G: Artur Taymazov, UzbekistanS: Beylal Makhov, RussiaB: Alexis Rodriguez, CubaB: Vadim Tasoev, UkraineTaymazov won gold in Athens with a spectacular pin.
Greco-Roman55 kg (121 lbs.)G: Hamid Souryan Reihanpour, IranS: Park Eun Chul, South KoreaB: Rovshan Bayramov, AzerbaijanB: Nazyr Mankiev, RussiaIran has won 34 medals in combat sports.
60 kg (132 lbs.)G: David Bedinadze, GeorgiaS: Armen Nazarian, BulgariaB: Eusebiu Diaconu, RomaniaB: Makoto Sasamoto, JapanNazarian won first of his two golds for his native Armenia.
66 kg (145 lbs.)G: Farid Mansurov, AzerbaijanS: Nikolay Gergov, BulgariaB: Kanatbek Begaliev, KyrgyzstanB: Steeve Guenot, FranceJake Deitchler, 18, is youngest U.S. Olympic wrestler since '76.
74 kg (163 lbs.)G: Mark Madsen, DenmarkS: Volodimir Shatsykykh, UkraineB: Valdemaras Venckaitis, LithuaniaB: Yavor Yanakiev, BulgariaOnly two of Denmark's 42 golds have been won in wrestling.
84 kg (185 lbs.)G: Alexei Mishin, RussiaS: Brad Vering, U.S.B: Nazmi Avluca, TurkeyB: Saman Tahmasebi, IranVering has degree in agriculture.
96 kg (211 lbs.)G: Ramaz Nozadze, GeorgiaS: Karam Gaber, EgyptB: Ghasem Rezaei, IranB: Marek Svec, Czech RepublicGaber was '04 champ.
120 kg (264 lbs.)G: Mijain Lopez, CubaS: Khasan Baroev, RussiaB: Dremiel Byers, U.S.B: Mihály Deák-Bárdos, HungaryByers spent years in shadow of Olympic champ Rulon Gardner.
Women's Freestyle48 kg (105.5 lbs.)G: Chiharu Icho, JapanS: Irini Merleni, UkraineB: Carol Huynh, CanadaB: Ren Xueceng, ChinaIn '04 Merleni was first woman to win wrestling gold.
55 kg (121 lbs.)G: Saori Yoshida, JapanS: Marcie Van Dusen, U.S.B: Natalia Golts, RussiaB: Tonya Verbeek, CanadaYoshida shut out Verbeek 6-0 for gold in Athens.
63 kg (138.5 lbs.)G: Kaori Icho, JapanS: Xu Hai Yan, ChinaB: Alena Kartashova, RussiaB: Yelena Shalygina, KazakhstanIcho won '04 final in overtime.
72 kg (158.5 lbs.)G: Stanka Zlateva, BulgariaS: Kyoko Hamaguchi, JapanB: Wang Xu, ChinaB: Olga Zhanibekova, KazakhstanHamaguchi's dad was a pro wrestler known as the Animal.
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