- Male 4x100 M Relay (9)
- Top 8 Advance by Time
- Friday 7/21/2017 - 11:00
- Jr. World:38.667/18/2004United States, USA
- T. KIMMONS, A. OMOLE, I. WILLIAMS, L. MERRIT
- PanAm U20:39.062009UNITED STATES, USA
- K. TALLEY, C. TREVANTE, T. RHODES, M. ROLAND
- Heat 1 Prelims
- 3EcuadorNT
- 1) Edisson S Acuña Mena 19 2)
- 3) Marcos M Herrera Pineda 18 4) David Ordoñez Nefi 19
- 4Brazil41.23
- 5United States of AmericaNT
- 1) Cravont Charleston 19 2) Anthony Schwartz 17
- 6Costa RicaNT
- Heat 2 Prelims
- 2JamaicaNT
- 1) Ashanie Smith 19 2) Christopher Grant 19
- 3) Christopher Taylor 18 4) Anthony Carpenter 18
- 3VenezuelaNT
- 4ChileNT
- 5Trinidad & TobagoNT
- 1) Jerod Elcock 19 2) Jalen Purcell 19
- 3) Tyrell Edwards 18 4) Akanni Hislop 19
- 6CanadaNT
- 1) Ansatasios Eliopoulos 18 2) Quinn Litherland 18
- 3) Karson Kowalchuk 19 4) Austin Cole 19