2024 (Tacoma Defiance): Appeared in 23 matches (13 starts) for Tacoma Defiance in 2024, scoring six goals. He also made one appearance for the First Team in 2024 Lamar Hunt U.S. Open Cup action.
2023 (York United FC): Tallied six goals and two assists in league play in 2023. Made appearances for York United FC in both the Canadian Championship and Canadian Premier League playoffs.
2022 (York United FC): Scored 12 goals and bagged four assists in league play in 2022, also recording a goal in the Canadian Championship against Pacific FC.
2021 (Rukh Lviv): Made two appearances for Rukh Lviv in league play, totaling 76 minutes.
De Rosario has made seven appearances for Guyana since 2023, scoring five goals, including four goals in the country’s 2024-2025 Concacaf Nations League run.
Played for both Toronto FC’s and New York City FC’s academies.
Signed by Sounders FC on May 8, 2025.
