In 2019, the inaugural year of the National Team Development Program, a pool of more than 1,400 boys and girls participated in the Phase 1 regional trials. The following players were invited to the Boys U15 National Combine.
2019 NTDP U15 Girls' Combine
| Name | School | Club |
|---|---|---|
| Adele Atherton | Head Royce (Calif.) | Atomic |
| Katharine Becker | Princeton (N.J.) | Ultimate |
| Marina Bergin | Harborfields (N.Y.) | Yellow Jackets |
| Ava Besson | Walton (Ga.) | Eaglestix |
| Emily Bradac | Regis Jesuit (Colo.) | Team 180 |
| Gracie Britton | Christian Brothers (N.Y.) | Ethix |
| Anna Brown | Unionville High School (Pa.) | Ultimate |
| Katie Buck | Moorestown (N.J.) | South Jersey Select |
| Lane Calkins | Naples (Fla.) | LaxManiax |
| Kaitlyn Carney | Franklin (Mass.) | Goldstar |
| Katie Clare | Bayport-Blue Point (N.Y.) | Yellow Jackets |
| Kylee Colbert | North Shore (N.Y.) | Yellow Jackets |
| Acacia Connor | Notre Dame Prep (Md.) | C2 Select |
| Noel Cumberland | Maryvale Prep (Md.) | Skywalkers |
| Ava deLyra | Wando (S.C.) | CT Dodgers |
| Reagan Digby | Valor Christian (Colo.) | Skywalkers |
| Emma Dixon | St. Paul's (Md.) | Coppermine |
| Jordan Dobin | All Lax LLC | |
| Shea Dolce | Darien (Conn.) | CT Grizzlies |
| Haven Dora | Trinity Hall (N.J.) | Centercourt |
| Kori Edmonson | McDonogh (Md.) | M&D |
| Charlotte Edwards | Saint Ignatius (Calif.) | Tenacity Elite |
| Sophie Edwards | Saint Ignatius (Calif.) | Tenacity Elite |
| Madison Epke | Guilford (Conn.) | Nor'easter |
| Devin Fabry | Upper Dublin (Pa.) | HEADStrong Philly |
| Samantha Forrest | Glastonbury (Conn.) | CT Dodgers |
| Maggie Golder | Pennsbury (Pa.) | Ultimate |
| Kate Hanlon | Lake Highland Prep (Fla.) | Lax Maniax |
| Ryan Hapgood | Darien (Conn.) | CT Grizzlies |
| Charlotte Hodgson | Penn Charter (Pa.) | Big 4 HHH |
| Molly Horrigan | McDonogh (Md.) | Skywalkers |
| Chloe Humphrey | Darien (Conn.) | CT Grizzlies |
| Anna Kaplan | Twin Valley (Pa.) | PA Express |
| Emma Kelly | Plainedge (N.Y.) | Team Elevate |
| Madeline Kim | Palo Alto (Calif.) | NorCal Rize |
| Merrill Klein | Ridgewood (N.J.) | BBL |
| Ella Kokinis | Garrison Forest (Md.) | Coppermine |
| Minje Kwun | Hockaday School (Texas) | GRIT Lacrosse |
| Isabel Lahah | St. Georges (Mass.) | Mass Elite |
| Cydney Lisk | Glenelg Country (Md.) | Hero's |
| Abigail LoCascio | St. Anthony's (N.Y.) | LI Top Guns |
| Makena London | McDonogh (Md.) | M&D |
| Bridget Lonsinger | Verona (N.J.) | DEWLAX |
| Emma LoPinto | Manhasset (N.Y.) | Liberty Lacrosse |
| Abigail Lyons | Carle Place (N.Y.) | LI Top Guns |
| Kaylie Mackiewicz | Northport (N.Y.) | Yellow Jackets |
| Gianna Monaco | Lenape (N.J.) | Ultimate |
| Kathryn Morissey | Skaneateles (N.Y.) | Salt City Snipers |
| Emma Muchnick | Suffern (N.Y.) | Mad Dog |
| Betty Nelson | Columbine (Colo.) | 3D Colorado |
| Alexis Niblock | Bayport-Blue Point (N.Y.) | Yellow Jackets |
| Paris Panagopoulos | Friends (N.Y.) | Yellow Jackets |
| Cate Parsells | Agnes Irwin (Pa.) | Ultimate |
| Emma Raines | Twin Valley (Pa.) | PA Express |
| Olivia Ripple | ||
| Olivia Rongo | Westhampton (N.Y.) | Title Nine Lacrosse Club |
| Emily Scorcia | Bay Shore (N.Y.) | LI Top Guns |
| Lindsey Serafine | Our Lady of Mercy (N.J.) | South Shore Lacrosse |
| Natalie Shurtleff | St. Paul's (Md.) | M&D |
| Harper Skeie | Palos Verdes (Calif.) | Fire Lacrosse |
| Kendall Steer | St. Paul's (Md.) | |
| Lainey Straub | Downingtown West (Pa.) | Phantastix |
| Amanda Sudnik | St. Paul's (Md.) | Yellow Jackets |
| Julia Suriano | Bryn Mawr (Md.) | Skywalkers |
| Kate Timarky | Centereach (N.Y.) | Yellow Jackets |
| Jocelyn Torres | Glenelg (Md.) | Hero's |
| Caitlin Tuttle | Morristown (N.J.) | Building Blocks Lacrosse |
| Caroline Uniacke | Notre Dame Academy (Mass.) | Mass Elite |
| Alyssa Vasquez | Potomac (Va.) | Cavaliers |
| Brooke Vinson | Bryn Mawr (Md.) | TLC |
| Carly Wilson | Radnor (Pa.) | Big 4 HHH |
| Sydney Wilson | Radnor (Pa.) | Big 4 HHH |
| Alyeska Yee-Jenkins | Oakton (Va.) | VA Metro |