| Temporada | Equipo | Competición | PJ | G | A | Nota | ||
|---|---|---|---|---|---|---|---|---|
| 2026 | Portland Timbers | MLS | 7 | 1 | 0 | 1 | 0 | 6.8 |
| 2025 | Portland Timbers | MLS | 22 | 0 | 3 | 2 | 0 | 6.7 |
| 2024 | Chicago Fire | MLS | 7 | 0 | 1 | 1 | 0 | 6.6 |
| 2024 | CF Montreal | MLS | 19 | 3 | 5 | 4 | 1 | 6.8 |
| 2023 | CF Montreal | MLS | 25 | 1 | 2 | 3 | 0 | 6.8 |
| 2023 | Inter Miami | MLS | 7 | 0 | 0 | 0 | 0 | 6.5 |
| 2022 | Inter Miami | MLS | 29 | 4 | 4 | 3 | 0 | 6.7 |
| 2021 | Houston Dynamo | MLS | 19 | 0 | 0 | 1 | 0 | 6.5 |
| 2020 | Houston Dynamo | MLS | 16 | 3 | 1 | 2 | 0 | 6.7 |
| 2019/2020 | Alajuelense | Primera Division | 48 | 21 | 0 | 3 | 1 | – |
| 2018/2019 | Alajuelense | Primera Division | 16 | 3 | 0 | 1 | 1 | – |
| 2018 | Ventura County | USL | 12 | 5 | 0 | 1 | 0 | – |
| 2018 | Los Angeles Galaxy | MLS | 7 | 0 | 0 | 0 | 0 | 6.6 |
| 2017 | Ventura County | USL | 5 | 5 | 0 | 0 | 0 | – |
| 2017 | Los Angeles Galaxy | MLS | 13 | 1 | 0 | 0 | 0 | 6.7 |
| 2016 | Los Angeles Galaxy | MLS | 3 | 0 | 0 | 0 | 0 | 6.6 |
| 2016 | Ventura County | USL | 7 | 9 | 0 | 0 | 0 | – |
| 2015 | Los Angeles Galaxy | MLS | 1 | 0 | 0 | 0 | 0 | 6.7 |
| 2015 | Ventura County | USL | 13 | 14 | 0 | 0 | 1 | – |
| 2014 | GAIS | Superettan | 12 | 1 | 0 | 2 | 0 | – |
| Total | 288 | 71 | 16 | 24 | 4 | – | ||
| Fecha | Desde | Hacia | Tipo | |
|---|---|---|---|---|
| - | Chicago Fire | Portland Timbers | Free agent | |
| - | CF Montreal | Chicago Fire | Transfer | |
| 04 dic 2023 | Inter Miami | CF Montreal | Transfer | |
| - | Houston Dynamo | Inter Miami | Transfer | |
| 01 ene 2021 | Alajuelense | Houston Dynamo | Transfer | |
| - | Houston Dynamo | Alajuelense | Return from loan | |
| - | Alajuelense | Houston Dynamo | Loan | |
| 01 ene 2019 | Los Angeles Galaxy | Alajuelense | Free agent | |
| - | GAIS | Los Angeles Galaxy | Free agent | |
| - | Cal Poly | GAIS | Free agent |
A. Lassiter career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.