Here is the Team USA roster for the World Track and Field Championships, which begin Saturday in Daegu, South Korea (* -- 2009 world champion):

Men

100 meters
Walter Dix, Justin Gatlin, Trell Kimmons

200
Dix, Darvis Patton, Jeremy Dodson

400
Tony McQuay, Greg Nixon, Jamaal Torrance, LaShawn Merritt-*

800
Nicholas Symmonds, Khadevis Robinson, Charles Jock

1,500
Matthew Centrowitz, Leonel Manzano, Andrew Wheating

3,000 steeplechase
William Nelson, Daniel Huling, Benjamin Bruce

5,000
Andrew Bumbalough, Bernard Lagat, Galen Rupp

10,000
Rupp, Matt Tegenkamp, Scott Bauhs

20-km race walk
Trevor Barron

Marathon
Nicholas Arciniaga, Michael Morgan, Sergio Reyes, Jeffrey Eggleston, Mike Sayenko

110 hurdles
David Oliver, Aries Merritt, Jason Richardson

400 hurdles
Jeshua Anderson, Bershawn Jackson, Angelo Taylor, Kerron Clement-*

High jump
Jesse Williams, Dustin Jonas, Erik Kynard

Pole vault
Derek Miles, Jeremy Scott, Mark Hollis

Long jump
Marquise Goodwin, William Claye, Trevell Quinley, Dwight Phillips-*

Triple jump
Christian Taylor, William Claye, Walter Davis

Shot put
Adam Nelson, Christian Cantwell-*, Reese Hoffa, Ryan Whiting

Discus throw
Jarred Rome, Jason Young, Lance Brooks

Hammer throw
Kibwe Johnson, Michael Mai

Javelin throw
Mike Hazle

Decathlon
Ashton Eaton, Ryan Harlan, Trey Hardee-*

4x100 relay
Dix, Gatlin, Kimmons, Ivory Williams, Travis Padgett

4x400 relay
Merritt, McQuay, Nixon, Torrence, Michael Berry, Miles Smith

Women

100
Carmelita Jeter, Marshavet Myers, Miki Barber

200
Shalonda Solomon, Jeter, Jeneba Tarmoh, Allyson Felix-*

400
Felix, Francena McCorory, Jessica Beard, Sanya Richards-Ross-*

800
Alysia Montano, Maggie Vessey, Alice Schmidt

1,500
Morgan Uceny, Jennifer Simpson, Shannon Rowbury

3,000 steeplechase
Emma Coburn, Bridget Franek, Stephanie Garcia

5,000
Molly Huddle, Amy Hastings, Lauren Fleshman

10,000
Shalane Flanagan, Kara Goucher, Jennifer Rhines

20-km race walk
Maria Michta

Marathon
Katherine Newberry, Alissa McKaig, Colleen De Reuck, Tera Moody, Zoila Gomez

100 hurdles
Kellie Wells, Danielle Carruthers, Dawn Harper

400 hurdles
Lashinda Demus, Queen Harrison, Jasmine Chaney

High jump
Brigetta Barrett, Inika McPherson

Pole vault
Kylie Hutson, Jenn Suhr, Lacy Janson

Long jump
Brittney Reese-*, Janay DeLoach, Funmi Jimoh, Tori Polk

Triple jump
Amanda Smock

Shot put
Michelle Carter, Jillian Camarena-Williams, Sarah Stevens-Walker

Discus throw
Stephanie Brown-Trafton, Aretha Thurmond, Gia Lewis-Smallwood

Hammer throw
Jessica Cosby, Amber Campbell, Jeneva McCall

Javelin throw
Kara Patterson, Rachel Yurkovich

Heptathlon
Sharon Day, Hyleas Fountain

4x100 relay
Jeter, Myers, Barber, LaShaunte’a Moore, Alexandria Anderson, Bianca Knight

4x400 relay
Richards-Ross, Felix, McCorory, Beard, Natasha Hastings, Keshia Baker