Ariel Lassiter

GAIS

In July 2014, Lassiter signed with GAIS in the Swedish Superettan. He made his debut for GAIS on 9 August 2014, playing 70 minutes in a 2–1 win over Husqvarna FF. On 23 August, he scored his first goal in a 2–0 win against Varbergs BoIS. Lassiter ended his first professional season with one goal from 12 matches.

LA Galaxy

On 29 January 2015, Lassiter signed with LA Galaxy II of the United Soccer League. He made his debut for Galaxy II on 22 March, coming on as a substitute in a 0–0 draw with Real Monarchs. Lassiter scored his first goal for Los Dos on 11 April to help Galaxy II to a 3–1 win over Sacramento Republic. He finished the regular season with 11 goals and one assist from 21 games, helping Galaxy II qualify for the playoffs. Lassiter scored four times in the playoffs as Los Dos reached the final, where they fell 2–1 to the Rochester Rhinos. He also scored once in the U.S. Open Cup as Galaxy II lost to Ventura County Fusion 2–1. The 2015 season also saw Lassiter make one appearance for the Galaxy first team, coming on as a substitute in a 3–0 loss to the Houston Dynamo in an MLS match on 25 July. On 5 March 2016, the Galaxy announced Lassiter had signed a first-team contract. He started the season with Galaxy II, scoring two goals in a 2–0 win over Arizona United on 26 March. The following week, Lassiter got his first ever MLS start as he helped the Galaxy first team to a 0–0 draw with the Vancouver Whitecaps. He then started five straight games…

Born in Costa Rica and raised in the United States, Lassiter was eligible to play for both national teams. He represented the United States U-23 national team twice in friendlies during 2015. Later that year, he switched to the Costa Rican U-23 national team and represented them at the 2015 Toulon Tournament. He made his senior debut for Costa Rica on 22 March 2019, in a friendly against Guatemala, coming on as a 63rd-minute substitute for Waylon Francis. On 1 July 2021, Lassiter was included in Luis Fernando Suárez's squad for the 2021 CONCACAF Gold Cup. Lassiter scored his first senior international goal on 12 July in a 3–1 over Guadeloupe in the Gold Cup group stage. He made four appearances, scored one goal, and had one assist at the Gold Cup, helping Costa Rica reach the quarterfinals.

Club

As of 4 October 2025

International

As of match played 9 September 2025

Scores and results lost Costa Rica's goal tally first.

Lassiter was born in Turrialba, Costa Rica, where his father Roy, a professional footballer, played for A.D. Carmelita. The Lassiter family moved to the United States after the elder Lassiter signed with the Tampa Bay Mutiny of Major League Soccer before eventually moving to Temecula, California when Ariel was 13. There, Lassiter attended Great Oak High School, where he played on the school soccer team for 4 years, captaining the team for 2 years. He received multiple accolades during his high school career, including being named two-time Inland Empire High School Player of the Year. Lassiter played college soccer for the Cal Poly Mustangs. He had 5 goals and 4 assists from 21 appearances during his first season for the Mustangs, earning a spot on the Big West Conference All-Freshman team. He left Cal Poly after his freshman season.