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 U17 Girls' Combine
| Name | School | Club |
|---|---|---|
| Brynn Ammerman | Agnes Irwin (Pa.) | Ultimate |
| Sophie Brett | Rye (N.Y.) | Snipers Elite |
| Maggie Brown | Eden Prairie (Minn.) | MN Elite |
| Annabelle Burke | Loyola Academy (Ill.) | Team One Wildcats |
| Margaret Carden | Villa Maria (Pa.) | Ultimate |
| Taylor Charpentier | Brooks School (Mass.) | Mass Elite |
| Sophia Chiodo Ortiz | Wissahickon (Pa.) | Ultimate |
| Rachel Clark | Conestoga (Pa.) | Ultimate |
| Paris Colgain | St. Paul's (Md.) | M&D |
| Izzy D'Antonio | St. Stephen's & St. Agnes (Va.) | Capital |
| Caitlin Dellecave | Patchogue-Medford (N.Y.) | Yellow Jackets |
| Boo DeWitt | Miramonte (Calif.) | Tenacity |
| Elyse Finnelle | Southern (Md.) | M&D |
| Mackenzie Fitzgerald | Flint Hill (Va.) | VA Metro |
| Celeste Forte | Eastport South Manor (N.Y.) | Yellow Jackets |
| Riley Glackin | Unionville (Pa.) | Ultimate |
| Natasha Gorriaran | Moses Brown (R.I.) | Mass Elite |
| Helaina Harris | Ransom Everglades (Fla.) | LaxManiax |
| Annabelle Hasselbeck | Rivers School (Mass.) | Mass Elite |
| Mallory Hasselbeck | Rivers School (Mass.) | Mass Elite |
| Abbie Izzo | Auburn (N.Y.) | Monster Elite |
| Avery Jaffe | Moorestown (N.J.) | Building Blocks |
| Abby Jansen | Radnor (Pa.) | Phantastix |
| Kalena Johnson | Amador Valley (Calif.) | LaxUHR |
| Ailish Kelly | Bayport-Blue Point (N.Y.) | Legacy |
| Olivia Koch | Lawrenceville (N.J.) | Ultimate |
| Jordyn Lipkin | Millburn (N.J.) | DEWLAX |
| Sierra Lizerbram | La Costa Canyon (Calif.) | West Coast Starz |
| Abigail Maichin | Huntington (N.Y.) | Yellow Jackets |
| Megan Mallgrave | St. Paul's (N.H.) | DEWLAX |
| Adair Martin | Bryn Mawr (Md.) | Skywalkers |
| Margaret Maruszewski | Greenwich Academy (Conn.) | CT Grizzlies |
| Molly May | Radnor (Pa.) | NXT |
| Delaney McDaniel | Archbishop Spalding (Md.) | M&D |
| Catherin McLaughlin | Laralton Hall (Conn.) | Nor'Easter |
| Emily Messinese | Gerstell Academy (Md.) | Skywalkers |
| Maddigan Miller | Bayport-Blue Point (N.Y.) | Yellow Jackets |
| Amanda Moghadasi | Smithtown East (N.Y.) | Yellow Jackets |
| Ashley Moynahan | Fairfield Ludlowe (Conn.) | Nor'Easter |
| Madeline Mueller | Great Valley (Pa.) | Ultimate |
| Lila Murray | Greenwich Academy (Conn.) | CT Grizzlies |
| Alecia Nicholas | Ithaca (N.Y.) | Salt City Sniper |
| Jackie Norsworthy | Lake Highland Prep (Fla.) | Hero's |
| Shira Parower | Staples (Conn.) | CT Grizzlies |
| Isabel Pithie | Norwell (Mass.) | Laxchusetts |
| Chloe Provenzano | American Heritage-Delray (Fla.) | Florida Select |
| Marymargaret Quinn | Bishop Ireton (Va.) | Maryland United |
| Victoria Reman | Phillips Exeter (Mass.) | Mass Elite |
| Amanda Reynolds | Governor Mifflin (Pa.) | Xtreme |
| Olivia Rose | St. Paul's (Md.) | C2 |
| Mia Rothstein | Haddonfield Memorial (N.J.) | Big 4 HHH |
| Hailey Russo | Clearview (N.J.) | All American Aim |
| Erin Schaefer | Sayville (N.Y.) | Yellow Jackets |
| Tierney Schaible | Dominion (Va.) | VA Metro |
| Julia Sharp | Garden City (N.Y.) | Team Elevate |
| Ella Smith | Jesuit (Ore.) | Tenacity Elite |
| Samantha Smith | Tamalpais (Calif.) | Tenacity Project |
| Vivian Spencer | Celebration (Fla.) | Summit Elite |
| Maley Starr | Loyola Academy (Ill.) | Summit Elite |
| Carolyn Thistlewaite | New Hope-Solebury (Pa.) | Ultimate |
| Christine Thomas | Riverhead (N.Y.) | LI Top Guns |
| Reilly Traynor | Red Bank Catholic (N.J.) | BBL Elite |
| Fallon Vaughn | Concord Carlisle (Mass.) | Mass Elite |
| Grace Weigand | Regis Jesuit (Colo.) | Summit Elite |