Maks s obzirom na karakteristike staze ocekivano najbrzi na FP1 ali mu Fetel neocekivano dise za vrat, dok je Hamilton nekih pola sekunde iza Fetela. Lekler je imao kvar a Botas razlupao bolid. Reno i Meklaren poravnati u borbi za best of the rest.
Zvanicni program za Lagunu: https://digbza2f4g9qo.cloudfront.net/-/media/Files/2019/IndyCar/17-LAG/indycar-spotterguide.pdf?vs=1&d=20190916T163021Z
Raspored boksova: https://digbza2f4g9qo.cloudfront.net/-/media/Files/2019/IndyCar/17-LAG/indycar-pitassignments.pdf?vs=1&d=20190913T140239Z