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 Men's Combine
| Name | School | Club |
|---|---|---|
| Matthew Bala | Buchholz (Fla.) | LCG |
| Charles Balsamo | Chaminade (N.Y.) | Long Island Express |
| Colby Berard | Spaulding (Vt.) | 802 Lacrosse |
| Wells Bergstrom | Manheim Township (Pa.) | Big 4 HHH |
| Carson Boyle | John Champe (Va.) | Virginia Blue Crabs |
| Mark Boyle | Coolidge Middle (Mass.) | NE Twister |
| James Brands | Milton (Ga.) | Georgia Tigers Elite |
| Ty Caffarelli | Corona Del Mar (Calif.) | Pride |
| Chris Caldwell | IMG Academy (Fla.) | True Utah State |
| James Carr | Natick (Mass.) | Prime Time Penguins |
| Zachary Chari | Walton (Ga.) | 3D Georgia |
| Erik Chick | St. Mary's Annapolis (Md.) | Annapolis Hawks |
| Aaron Cho | Herricks (N.Y.) | Igloo |
| Will Costin | Haverford School (Pa.) | Mesa |
| Drew Curran | Legend (Colo.) | Sixers |
| Jack Cyrek | Detroit Catholic Central (Mich.) | True National/Michigan |
| Tyler Davide | Sachem North (N.Y.) | FLG 2022 |
| Ryan DiRocco | Haverford School (Pa.) | Mesa |
| Christopher Esslinger | Ridgley Middle (Md.) | Looney's |
| Jack Feeks | Pingree School (Mass.) | 3D New England |
| Riley Figueiras | St. John's College (Md.) | Annapolis Hawks |
| Brady Foster | Blanchet Catholic (Ore.) | 3D Oregon |
| Dylan Freshman | Chaminade (Calif.) | LA Heat |
| Alex Giacobbe | Manhasset (N.Y.) | FLG |
| Andrew Greenspan | Brunswick School (Conn.) | Prime Time |
| Brendan Hampton | Peninsula (Wash.) | Seattle Starz |
| Matthew Han | Paul VI (Va.) | MadLax |
| Mike Hanlon | Phillips Andover (Mass.) | 3D New England |
| Henry Hasselbeck | Fessenden School (Mass.) | Gorilla 2024 |
| Charlie Higgins | Andover (Mass.) | HGR |
| Owen Hirsch | Manheim Township (Pa.) | Rising Sons |
| Keenan Hollahan | Sun Valley (N.C.) | Rattlesnakes |
| Charlie Howard | Staples (Conn.) | Express North |
| Max Hubler | Blake School (Minn.) | Team Minnesota |
| Thomas Hustins | Easton Middle (Mass.) | 3D New England |
| Matt Hutchings | Horace Greeley (N.Y.) | 3D Tri-State |
| Logan Ip | Corona Del Mar (Calif.) | Mad Dog |
| Zander Johnson | Downers Grove South (Ill.) | Prospect |
| Nate Kabiri | Episcopal (Va.) | Annapolis Hawks |
| Ben Kieu | South Portland (Maine) | LaxPros |
| Tyler Kuprianchik | Northport (N.Y.) | Rebels |
| Jack LaBanca | Poor John (N.J.) | NJ Riot/Sixers |
| Colin Langton | St. Anthony's (N.Y.) | Long Island Express |
| AJ Larkin | Loyola Blakefield (Md.) | FCA |
| Carter Laughman | Valley Central (N.Y.) | Hudson Valley Express |
| Aidan Lee | Loyola-Los Angeles (Calif.) | Cobras |
| Maverick Lyon | West Albany (Ore.) | 3D Oregon |
| Donald Mack | Manhasset (N.Y.) | Long Island Express |
| John Madsen | Locust Valley (N.Y.) | True Blue North |
| Teddy Manitta | Chatham (N.J.) | |
| Jimmy McCool | New Hampton (N.H.) | 3D New England |
| Paul McLucas | McDonogh (Md.) | Team 91 |
| Jacob Mead | Biglerville (Pa.) | Team Maryland LC |
| Ami Miller | Shorecrest (Wash.) | Seattle Starz |
| McCabe Millon | McDonogh (Md.) | Team 91 |
| Ryder Mitchell | North Gwinnett (Ga.) | Empire |
| Zach Monette | Woodward Academy (Ga.) | Thunder LB3 |
| Anderson Moore | Briarwood Christian (Ala.) | 3D Georgia |
| Ashton Morgan | Boys' Latin (Md.) | |
| Michael O'Hare | East Greenwich (R.I.) | |
| Jacob Pacheco | Valor Christian (Colo.) | Denver Elite |
| Charlie Packard | Hingham Middle (Mass.) | Boston Kings |
| Hunter Panzik | Manhasset (N.Y.) | Igloo |
| Zayn Patel | Woodinville (Wash.) | |
| Michael Piotrowski | Downers Grove South (Ill.) | |
| Cole Pollard | Tesoro (Calif.) | OC Ducks |
| Brady Quackenbush | Furnace Brooke Middle (Mass.) | Eastern Mass Hawks |
| John Raucci | Seaford (N.Y.) | Igloo |
| Cade Reding | Chanhassen (Minn.) | |
| Luke Reiter | Waunakee (Wisc.) | Juiced Cherries |
| Jackson Roberts | Broadneck (Md.) | Annapolis Hawks |
| Cole Rogers | O'Dea (Wash.) | CitySideLax |
| Collin Rovere | Wayne Valley (N.J.) | Tri-State Lacrosse |
| Matthew Sardis | Bernards (N.J.) | 2Knights |
| Aiden Schiefer | Robinson (Va.) | VLC |
| Joshua Seiple | Bancroft (Mass.) | Top Gun Lacrosse |
| Sam Sisk | Polson Middle (Conn.) | Prime Time |
| Max Snellenburg | John Carroll (Md.) | Mavericks |
| Will Snyder | St. Anthony's (N.Y.) | Long Island Express |
| Eli Spence | Mount Sinai (N.Y.) | Mount Si |
| Darius Stanley | La Jolla (Calif.) | Legends |
| Evan Suh | South Forsyth (Ga.) | 3D Georgia |
| Fletcher Sullivan | Regis Jesuit (Colo.) | Denver Elite |
| Ethan Swett | Issaquah (Wash.) | Seattle Starz |
| Julian Targete | Belmont (Mass.) | Laxchusetts |
| Sawyer Tighe | Leonard J Tyl Middle (Conn.) | Montville |
| Brody Upton | Nobles (Mass.) | 3D New England |
| Ralph Vogel | Milton Academy (Mass.) | 3D New England |
| Nate Warren | Tosero (Calif.) | SoCal Express/td> |
| Zach White | Columbus Academy (Ohio) | Resolute |
| Henry Wright | Ipswich Middle (Mass.) | Twisters |