The full roster of athletes representing Team USA at the 2013 IAAF World Championships has been finalized. In addition to the nine athletes looking to defend their World championships, there are also 20 individual Olympic medalists from London.

But Team USA is also unexpectedly young as 55 of the 135 members are under the age of 25, including three exciting teenagers — Mary Cain (1,500m), Arman Hall (400m) and Ajee Wilson (800m), each of whom is a veteran of The Armory.

Those defending their World titles are Lashinda Demus (400m hurdles), Trey Hardee (decathlon), Carmelita Jeter (100m), Dwight Phillips (long jump), Brittney Reese (long jump), Jason Richardson (110m hurdles), Jenny Simpson (1500m), Christian Taylor (triple jump) and Jesse Williams (high jump).

No school can match the University of Florida, which is sending nine Gators to Moscow. Of that group, only one — 400m hurdler Kerron Clement — is older than 23. Oregon and Southern Cal each have seven team members.

There is only one high school with more than one member of Team USA. High jumper Chaunte Lowe and discus thrower Whitney Ashley are both graduates of J.W. North High in Riverside, Calif.

Note that the relay pools are comprised of the athletes tagged as either 4x100m or 4x400m members plus any athlete already on the roster in any other event.

Name	Event	Twitter	IAAF	USATF	College	High School	Age	SB	PB
Justin Gatlin	100				Tennessee	Woodham (Fla.)	31	9.89	9.79
Charles Silmon	100				TCU	Waco (Texas)	22	9.98	9.98
Mike Rodgers	100				Oklahoma Baptist	Berkeley (Mo.)	28	9.96	9.85
English Gardner	100				Oregon	Eastern Senior (N.J.)	21	10.85	10.85
Octavious Freeman	100				UCF	Lake Wales (Fla.)	21	10.87	10.87
Alexandria Anderson	100				Texas	Morgan Park (Ill.)	26	10.91	10.91
Carmelita Jeter	100				Cal State Dominguez	Bishop Montgomery (Calif.)	33	10.93	10.64
Isiah Young	200				Mississippi	Junction City (Kan.)	23	19.86	19.86
Curtis Mitchell	200				Texas A&M	Atlantic (Fla.)	24	19.99	19.99
Wallace Spearmon	200				Arkansas	Fayetteville (Ark.)	28	20.10	19.65
Kimberlyn Duncan	200				LSU	Cypress Springs (Texas)	22	22.35	22.13
Allyson Felix	200				Southern Cal	Los Angeles Baptist (Calf.)	27	22.36	21.69
Jeneba Tarmoh	200				Texas A&M	Mount Pleasant (Calif.)	23	22.72	22.28
Charonda Williams	200				Arizona State	Samuel Gompers (Calif.)	26	22.71	22.52
LaShawn Merritt	400				East Carolina	Woodrow Wilson (Va.)	27	44.09	43.75
Tony McQuay	400				Florida	Suncoast (Fla.)	23	44.72	44.49
Arman Hall	400				Florida	St. Thomas Aquinas (Fla.)	19	44.82	44.82
Natasha Hastings	400				South Carolina	A. Philip Randolph (N.Y.)	27	49.94	49.84
Francena McCorory	400				Hampton	Bethel (Va.)	24	49.96	49.96
Ashley Spencer	400				Illinois	Lawrence North (Ind.)	20	50.28	50.28
Duane Solomon	800				Southern Cal	Cabrillo (Calif.)	28	1:43.27	1:42.82
Nick Symmonds	800				Willamette	Bishop Kelly (Idaho)	29	1:43.67	1:42.95
Brandon Johnson	800				Riverside City	West Orange Stark (Texas)	28	1:43.84	1:43.84
Alysia Montano	800				California	Canyon (Calif.)	27	1:57.75	1:57.34
Brenda Martinez	800				Cal-Riverside	Rancho Cucamonga (Calif.)	25	1:58.18	1:58.18
Ajee Wilson	800					Neptune (N.J.)	19	1:59.55	1:59.55
Matthew Centrowitz	1500				Oregon	Broadneck (Md.)	23	3:33.58	3:31.96
Leonel Manzano	1500				Texas	Marble Falls (Texas)	28	3:33.14	3:32.37
Lopez Lomong	1500				Northern Arizona	Tully (N.Y.)	28	3:34.55	3:32.20
Mary Cain	1500					Bronxville (N.Y.)	17	4:04.62	4:04.62
Jenny Simpson	1500				Colorado	Oviedo (Fla.)	26	4:00.48	3:59.90
Cory McGee	1500				Florida	Pass Christian (Miss.)	21	4:06.67	4:06.67
Sarah Brown	1500				Tennessee	Fauquier (Va.)	26	4:05.27	4:05.27
Bernard Lagat	5000				Washington State		38	13:07.76	12:53.60
Galen Rupp	5000				Oregon	Central Catholic (Ore.)	27	13:05.17	12:58.90
Ryan Hill	5000				N.C. State	Hickory (N.C.)	23	13:14.22	13:14.22
Molly Huddle	5000				Notre Dame	Notre Dame (N.Y.)	28	15:05.56	14:44.76
Shannon Rowbury	5000				Duke	Sacred Heart Cathedral (Calif.)	28	15:18.06	15:00.51
Kim Conley	5000				UC Davis	Montgomery (Calif.)	27	15:09.57	15:09.57
Galen Rupp	10k				Oregon	Central Catholic (Ore.)	27	27:25.33	26:48.00
Dathan Ritzenhein	10k				Colorado	Rockford (Mich.)	30	28:49.66	27:22.28
Chris Derrick	10k				Stanford	Neuqua Valley (Ill.)	22	28:52.25	27:31.38
Shalane Flanagan	10k				North Carolina	Marblehead (Mass.)	32	31:04.85	30:22.22
Jordan Hasay	10k				Oregon	Mission College Prep (Calif.)	21	31:46.42	31:46.42
Amy Hastings	10k				Arizona State	Leavenworth (Kan.)	29	32:31.28	31:10.69
Ryan Wilson	110 hurdles				Southern Cal	Westerville North (Ohio)	32	13.08	13.02
David Oliver	110 hurdles				Howard	Denver East (Colo.)	31	13.03	12.89
Aries Merritt	110 hurdles				Tennessee	Wheeler (Ga.)	28	13.09	12.80
Jason Richardson	110 hurdles				South Carolina	Cedar Hill (Texas)	27	13.20	12.98
Brianna Rollins	100 hurdles				Clemson	Miami Northwestern (Fla.)	21	12.26	12.26
Queen Harrison	100 hurdles				Virginia Tech	Hermitage (Va.)	24	12.43	12.43
Nia Ali	100 hurdles				Southern Cal	West Catholic (Pa.)	24	12.48	12.48
Dawn Harper-Nelson	100 hurdles				UCLA	East St. Louis (Ill.)	29	12.53	12.37
Michael Tinsley	400 hurdles				Jackson State	Pulaski Robinson (Ark.)	29	47.96	47.91
Kerron Clement	400 hurdles				Florida	LaPorte (Texas)	27	48.06	47.24
Bershawn Jackson	400 hurdles				St. Augustine's	Miami Central (Fla.)	30	48.09	47.30
Dalilah Muhammad	400 hurdles				Southern Cal	Benjamin Cardozo (N.Y.)	23	53.83	53.83
Georganne Moline	400 hurdles				Arizona	Thunderbird (Ariz.)	23	53.72	53.72
Christine Spence	400 hurdles				UNLV	Lee's Summit North (Mo.)	31	54.56	54.21
Lashinda Demus	400 hurdles				South Carolina	Woodrow Wilson (Calif.)	30	54.69	52.47
Evan Jager	Steeplechase				Wisconsin	Jacobs (Ill.)	24	8:08.60	8:06.81
Dan Huling	Steeplechase				Miami/Ohio	Riverdale (Ill.)	30	8:22.38	8:13.29
De'Sean Turner	Steeplechase				Indiana	Warren Central (Ind.)	24	8:25.56	8:25.56
Nicole Bush	Steeplechase				Michigan State	Kelloggsville (Mich.)	27	9:39.36	9:39.36
Ashley Higginson	Steeplechase				Princeton	Colts Neck (N.J.)	24	9:45.83	9:34.39
Shalaya Kipp	Steeplechase				Colorado	Skyline (Utah)	22	9:37.23	9:35.73
Erik Kynard	High jump				Kansas State	Rogers (Ohio)	22	2.37 7-9 1/4	2.37 7-9 1/4
Dusty Jonas	High jump				Nebraska	LaVernia (Texas)	27	2.30 7-6 1/2	2.36 7-8 3/4
Jesse Williams	High jump				Southern Cal	Broughton (N.C.)	29	2.31 7-7	2.37 7-9 1/4
Keith Moffatt	High jump				Morehouse	Menchville (Va.)	29	2.28 7-5 3/4	2.30 7-6 1/2
Brigetta Barrett	High jump				Arizona	Duncanville (Texas)	22	2.04 6-8 1/4	2.04 6-8 1/4
Inika McPherson	High jump				California	Memorial (Texas)	26	1.92 6-3 1/2	1.95 6-4 3/4
Chaunte Lowe	High jump				Georgia Tech	J.W. North (Calif.)	29	2.01 6-7	2.05 6-8 3/4
Brad Walker	Pole vault				Washington	University (Wash.)	32	5.83 19-1 1/2	6.04 19-9 3/4
Jeremy Scott	Pole vault				Arkansas	Norfolk (Neb.)	32	5.65 18-6 1/2	5.75 18-10 1/4
Jack Whitt	Pole vault				Oral Roberts	Norman North (Okla.)	23	5.70 18-8 1/4	5.70 18-8 1/4
Jenn Suhr	Pole vault				Roberts Wesleyan	Fredonia (N.Y.)	31	4.80 15-9	4.92 16-1 3/4
Kylie Hutson	Pole vault				Indiana State	North Vigo (Ind.)	25	4.70 15-5	4.70 15-5
Becky Holliday	Pole vault				Oregon	Reed (Nev.)	33	4.55 14-11	4.60 15-1
George Kitchens	Long jump				Clemson	Glenn Hills (Ga.)	30	8.17 26-9 3/4	8.21 26-11 1/4
Dwight Phillips	Long jump				Arizona State	Tucker (Ga.)	35	7.89 25-10 3/4	8.74 28-8 1/4
Marquis Dendy	Long jump				Florida	Middletown (Del.)	20	8.10 26-7	8.10 26-7
Janay DeLoach Soukup	Long jump				Colorado State	Ben Eielson (Alaska)	27	6.99 22-11 1/4	7.03 23-0 3/4
Tori Polk	Long jump				Texas Tech	Midway (Texas)	29	6.70 21-11 3/4	6.75 22-1 3/4
Funmi Jimoh	Long jump				Rice	Dulles (Texas)	29	6.92 22-8 1/2	6.96 22-10
Brittney Reese	Long jump				Mississippi	Gulfport (Miss.)	26	7.25 23-9 1/2	7.25 23-9 1/2
Omar Craddock	Triple jump				Florida	Richard Milburn (Texas)	22	16.92 55-6 1/4	16.92 55-6 1/4
Will Claye	Triple jump				Florida	Mountain Pointe (Ariz.)	22	17.47 57-3 3/4	17.62 57-9 3/4
Christian Taylor	Triple jump				Florida	Sandy Creek (Ga.)	23	17.66 57-11 1/4	17.96 58-11 1/4
Ryan Whiting	Shot put				Arizona State	Central Dauphin (Pa.)	26	22.28 73-1 1/4	22.28 73-1 1/4
Reese Hoffa	Shot put				Georgia	Lakeside Evans (Ga.)	35	21.71 71-2 3/4	22.43 73-7 1/4
Zack Lloyd	Shot put				Arizona	Ely (Nev.)	28	21.09 69-2 1/2	21.09 69-2 1/2
Cory Martin	Shot put				Auburn	Edgewood (Ind.)	28	20.67 67-9 3/4	22.10 72-6 1/4
Michelle Carter	Shot put				Texas	Red Oak (Texas)	27	20.24 66-5	20.24 66-5
Tia Brooks	Shot put				Oklahoma	East Kentwood (Mich.)	23	18.96 62-2 1/2	18.96 62-2 1/2
Alyssa Hasslen	Shot put				Arizona	McMinnville (Ore.)	22	18.10 59-4 3/4	18.35 60-2 1/2
Lance Brooks	Discus throw				Millikin	New Berlin (Ill.)	29	62.29 204-4	65.15 213-9
Gia Lewis-Smallwood	Discus throw				Illinois	Centennial (Ill.)	34	65.49 214-10	65.49 214-10
Whitney Ashley	Discus throw				San Diego State	J.W. North (Calif.)	24	61.64 202-2	61.64 202-2
Liz Podominick	Discus throw				Minnesota	Lakeville (Minn.)	28	62.32 204-5	62.32 204-5
A.G. Kruger	Hammer throw				Morningside	Sheldon (Iowa)	34	77.10 252-11	79.26 260-0
Amanda Bingson	Hammer throw				UNLV	Silverado (Nev.)	23	75.73 248-5	75.73 248-5
Jeneva McCall	Hammer throw				Illinois	Thornridge (Ill.)	23	74.00 242-9	74.00 242-9
Amber Campbell	Hammer throw				Coastal Carolina	Pike (Ind.)	32	73.03 239-7	73.03 239-7
Riley Dolezal	Javelin throw				North Dakota State	Stanley (N.D.)	27	83.50 273-11	83.50 273-11
Sam Humphreys	Javelin throw				Texas A&M	J.B. Alexander (Texas)	22	83.14 272-9	83.14 272-9
Brittany Borman	Javelin throw				Oklahoma	Festus (Mo.)	24	60.91 199-10	61.51 201-9
Ashton Eaton	Decathlon				Oregon	Mountain View (Ore.)	25	8,291	9,039
Gunnar Nixon	Decathlon				Arkansas	Santa Fe (Okla.)	20	8,198	8,198
Jeremy Taiwo	Decathlon				Washington	Newport (Wash.)	23	8,239	8,239
Trey Hardee	Decathlon				Texas	Vestavia Hills (Ala.)	29	—	8,790
Sharon Day	Heptathlon				Cal Poly	Costa Mesa (Calif.)	28	6,550	6,550
Bettie Wade	Heptathlon				Michigan	Farmington (Mich.)	26	6,018	6,143
Erica Bougard	Heptathlon				Mississippi State	Byhalia (Miss.)	20	5,976	5,976
Tim Seaman	20k walk				Wis.-Parkside	North Babylon (N.Y.)	41	1:30:13	1:23:40
Maria Michta	20k walk				C.W. Post	Sachem North (N.Y.)	27	1:37:34	1:34:53
Erin Gray	20k walk				Arkansas	South Eugene (Ore.)	26	1:39:19	1:35:40
Miranda Melville	20k walk				Wis.-Parkside	Rush Henrietta (N.Y.)	24	—	1:34:57
John Nunn	50k walk				San Diego	Harrison (Ind.)	35	—	4:03.28
Carlos Trujillo	Marathon				Oregon	Middleton (Idaho)	28	—	2:14:21
Jeff Eggleston	Marathon				Virginia	Greece Arcadia (N.Y.)	28	2:14:57	2:12:03
Daniel Tapia	Marathon				Cal-Santa Cruz	North County (Calif.)	26	—	2:15:28
Jeannette Faber	Marathon				Grand Valley State	Gull Lake (Mich.)	31	—	2:32:37
Deena Kastor	Marathon				Arkansas	Agoura (Calif.)	40	—	2:19:36
Dot McMahan	Marathon				Wis.-Milwaukee	Hilbert (Wis.)	36	—	2:31:50
Mookie Salaam	4x100m				Oklahoma	Edmond North (Okla.)	23	—	—
Dentarius Locke	4x100m				Florida State	Chamberlain (Fla.)	23	—	—
Jeff Demps	4x100m				Florida	South Lake (Fla.)	23	—	—
Barbara Pierre	4x100m				St. Augustine's	Oak Ridge (Fla.)	26	—	—
Aurieyall Scott	4x100m				UCF	Eleanor Roosevelt (Md.)	21	—	—
Josh Mance	4x400m				Southern Cal	Don Lugo (Calif.)	21	—	—
James Harris	4x400m				Mississippi State	Lanett (Ala.)	21	—	—
David Verburg	4x400m				George Mason	E.C. Glass (Va.)	22	—	—
Joanna Atkins	4x400m				Auburn	Stephenson (Ga.)	24	—	—
Jessica Beard	4x400m				Texas A&M	Euclid (Ohio)	24	—	—
Rebecca Alexander	4x400m				LSU	Belaire (La.)	23	—	—