Lassiter's current-season form is level with last season (Season 7→7), while his Rating climbed 16→18. His peak season for form remains 2022/23 (Season 24).

Domestic career

Season	Club	Apps	G	A	Match	RTG	Season
2026/27	Portland Timbers · 9th	16	3	2	6.87	18	7
2025/26	Portland Timbers · 8th	22	0	3	6.7	16	7
2024/25	Chicago Fire	7	0	1	6.6	—	—
2024/25	CF Montreal · 8th	27	3	2	6.6	28	18
2023/24	CF Montreal · 10th	32	1	0	6.51	29	6
2023/24	Inter Miami	7	0	0	6.51	—	—
2022/23	Inter Miami · 6th	31	4	4	6.73	35	24

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 8 earlier seasons in the full career.

Costa Rica · international

Side	Apps	G
Costa Rica	34	2

Career caps & goals — tournament breakdown in the full career.

Scout report

Experienced headCreative Centre-forward

A. Lassiter is a 31-year-old centre-forward at Portland Timbers, rated 15.6 overall by Field Insider's model, ranking 381st of 436 on scout potential in the Major League Soccer. A seasoned veteran, he has been a fringe squad member this season (16.6% of available minutes). He brings 0.48 goal contributions per 90 (0 goals, 0.48 assists). Below: strengths, watch-points, market-value outlook and the latest transfer news on Lassiter.

Judged on this season alone, Lassiter graded 7 — a workmanlike campaign that ranks 44th of 45 of the 45 centre-forwards in the Major League Soccer, on 0 goals and 3 assists in 22 appearances (0.475 involvements per 90).

Year-on-year, that's broadly in line with last season (Season 7 → 7). Over the 7 seasons on record his form has drifted down, peaking in 2022/23.

On long-term talent our Rating reads 16, 42nd of 45 of the 45 centre-forwards in the Major League Soccer. At 31 Lassiter is into the veteran stage, where the age curve weighs on the projection, and a market index of 1.3 reflects that trajectory.

From the career report

Read the full career report →

Past his 2022/23 peak — the recent trend is downward, so buyers are paying for what's left, not what was.

Peak: 2022/23Trending downBreakout: 2022/234 clubs

Current potential42nd of 45 centre-forwards · Major League Soccer · 22 apps Current season44th of 45 centre-forwards · Major League Soccer · 22 apps 44th-best centre-forward in the Major League Soccer 381st in the Major League Soccer · potential 42nd-highest potential centre-forward in the Major League Soccer

15.6

Ratingi

42nd of 45 centre-forwards

6.9

Seasoni

below regular-starter level

16.6%

Minutes

limited game time

0.48

Goal contrib / 90

productive for the role

Output in context · Portland Timbers finished 8th of 15 · a mid-table side

Apps

Goals

Assists

G+A

Goals / app

0 goals in 22 appearances (0 per game) — light end product the role wants to see climb. He also laid on 3 assists, so the all-round involvement reads 3 goal contributions (0.14 per appearance).

Strengths

Final-third output. 0.48 goal contributions per 90 (0 goals, 0.48 assists) — productive for the role.

Watch points

Game time. Only 16.6% of available minutes — needs a settled run to prove the level.
Age curve. At 31, both level and resale value are on the downslope.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

With a Rating of 15.6, Lassiter carries the 42nd-highest potential of the centre-forwards in the Major League Soccer of 45 — though on just 22 appearances this season, so the standing rests on a small sample. In the final third he profiles as a productive contributor (0.48 goal contributions per 90). Veteran phase — a short-term, lower-fee proposition as both level and value decline (0.9× and falling).

Generated from Field Insider's rating model · AI-written analysis to follow.

Per 90 & availability

Minutes played %16.6%

Available fixtures38 of 38

Goals / 900

Assists / 900.475

Goal contribution / 900.475

Defensive actions / 900.475

Player flow

Goal involvements3

Cards / 900.317

Season-by-season progression

Rating (potential)Season (form)

Value & potential by age

Market valueRating

Solid = now · dashed = projected

The gold line is market value — an index (not €) blending rating, age and league. It climbs through the early 20s, peaks around ages 23–27 (~3), then tapers with age. At 31, Lassiter sits on 1.3, past its peak and easing. The blue line is Lassiter's projected Rating — 15.6 today — recomputed at each age, so it follows the same rise-and-fall as a career matures and declines. Solid = up to today; dashed = projected.

Season statistics

Bars = where he ranks among centre-forwards in the Major League Soccer with 600+ minutes this season.

Shooting

Goals0

Passing

Assists3

Defending

Tackles1

Interceptions1

Blocks1

Yellow/red cards

Yellow cards2

Red cards0

Transfer history

€0.1M total transfer fees · 7 moves

Portland TimbersJan 2025 – nowFree Transfer

Chicago FireAug 2024 – Jan 2025€ 68K

CF MontrealApr 2023 – Aug 2024Swap

Inter MiamiDec 2021 – Apr 2023

Houston Dynamo(on loan)Aug 2020 – Dec 2021

LLD AlajuelenseJan 2018 – Aug 2020Free

Los Angeles GalaxyFeb 2015 – Jan 2018Free

Gaisuntil Feb 2015

About A. Lassiter

Ariel Daniel Lassiter Acuña is a 31-year-old centre-forward who plays for Portland Timbers, born on September 27, 1994 in Turrialba, standing 178 cm tall. He is from Costa Rica. Portland Timbers currently sit 9th of 15 in the Major League Soccer.

This season

In the current season, A. Lassiter has made 16 appearances with 3 goals and 2 assists across 618 minutes, averaging a 6.98 match rating over his last 10 rated games, with 2 yellow cards. Though primarily a centre-forward, he has also lined up in midfield this season.

When A. Lassiter plays, Portland Timbers's record this season is 10W-2D-7L — and his match ratings average 7.3 at home against 6.41 on the road.

Recent matches

August 23, 2026: 1-1 draw away at Los Angeles FC (54 minutes, 6.5 rating)
August 20, 2026: 3-1 win at home vs San Diego (83 minutes, 1 goal, 7 rating)
August 16, 2026: 1-2 loss away at Chicago Fire (34 minutes, 6.2 rating)
August 14, 2026: 3-1 win at home vs Club Tijuana (90 minutes, 1 goal, 7.2 rating)
August 10, 2026: 1-3 loss away at Club America (66 minutes, 6.3 rating)
August 7, 2026: 5-2 win at home vs Puebla (58 minutes, 2 goals, 8.7 rating)
August 2, 2026: 2-1 win at home vs Seattle Sounders (65 minutes, 7 rating)
July 26, 2026: 2-1 win at home vs Real Salt Lake (57 minutes, 1 assist, 7.3 rating)
July 23, 2026: 2-2 draw at home vs FC Dallas (55 minutes, 6.7 rating)
July 17, 2026: 5-1 win away at Seattle Sounders (73 minutes, 6.9 rating)

A. Lassiter's next match is on August 30, 2026, when Portland Timbers face Austin at home in the Major League Soccer.

Field Insider's view

Field Insider currently rates A. Lassiter at 15.6 with a Season form score of 6.9, ranking 381st of 436 centre-forwards in the Major League Soccer. See the full scout report for strengths, watch-points and the market-value outlook.

His honours include 2 career titles — among them the Carolina Challenge Cup. Full list in the career record.

Career

Across 13 recorded seasons, A. Lassiter has totalled 335 club appearances with 76 goals and 13 assists for 9 different clubs. His busiest campaign came in 2019/20, with 48 appearances for LD Alajuelense.

A. Lassiter's career has also included time at Chicago Fire, CF Montreal, Inter Miami, Houston Dynamo, LLD Alajuelense, Los Angeles Galaxy and Gais.

On the international stage, A. Lassiter has represented Costa Rica — 34 caps and 2 goals in our records.

Transfer news

No transfer news found for this player.

Profile

Season stats

Performance data · by competition

Career

Scout report

Output in context · Portland Timbers finished 8th of 15 · a mid-table side

Strengths

Watch points