Following his move to Burton Albion, O’Mahony's current-season form is level with last season (Season 0→0), while his Rating eased 41→39. His peak season for form remains 2024/25 (Season 9).

Domestic career

Season	Club	Apps	G	Match	RTG	Season
2026/27	Burton AlbionLoan · 14th	1	0	6.81	41	0
2025/26	ReadingLoan · 12th	16	0	6.29	41	0
2024/25	PortsmouthLoan · 16th	13	3	6.58	63	9
2024/25	Brighton	1	1	7.2	—	—
2023/24	Brighton · 11th	3	0	6.4	72	0
2022/23	Cork City	11	0	—	—	—

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 3 youth-team spells in the full career.

Republic of Ireland · international

Side	Apps	G
Republic of Ireland U21	4	0
Republic of Ireland U19	9	5
Republic of Ireland U17	6	4

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

Scout report

Squad depthCentre-forward

Mark O’Mahony is a 21-year-old centre-forward at Burton Albion, rated 38.5 overall by Field Insider's model. A young player, he has been a fringe squad member this season (0.4% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on O’Mahony.

On the season, O’Mahony graded 0 for current form (age-blind), on 0 goals and 0 assists in 1 appearance (0 involvements per 90).

Year-on-year, that's broadly in line with last season (Season 0 → 0). Over the 4 seasons on record his form has held fairly steady, peaking in 2024/25.

On long-term talent our Rating reads 39. At 21 O’Mahony is still climbing toward his ceiling, and a market index of 7.7 reflects that trajectory.

From the career report

Read the full career report →

Past his 2024/25 peak — the recent trend is downward, so buyers are paying for what's left, not what was.

Peak: 2024/25Trending down4 clubs

38.5

Ratingi

developing / rotation level

Seasoni

below regular-starter level

0.4%

Minutes

limited game time

Goal contrib / 90

low end product

Output in context · Burton Albion finished 14th of 24 · a mid-table side

Apps

Goals

Assists

G+A

Goals / app

0 goals in 1 appearance (0 per game) — light end product the role wants to see climb.

Watch points

Game time. Only 0.4% of available minutes — needs a settled run to prove the level.
Output. 0 contributions per 90 is light for an attacking role — end product needs to climb.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

Rated 38.5 overall — developing / rotation level. In the final third he profiles as a work-in-progress on end product (0 goal contributions per 90). At 21 the trajectory points up — potential sits near its ceiling (97/100) and market value should climb as minutes and output follow.

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

Per 90 & availability

Minutes played %0.4%

Available fixtures12 of 12

Goals / 900

Assists / 900

Goal contribution / 900

Defensive actions / 900

Player flow

Goal involvements0

Pass accuracy %100

Cards / 900

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 (~9), then tapers with age. At 21, O’Mahony sits on 7.7, still climbing toward its peak. The blue line is O’Mahony's projected Rating — 38.5 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.

Transfer history

Burton Albion(on loan)Aug 2026 – now

Brighton(back from loan)Jun 2026 – Aug 2026

Reading(on loan)Jun 2025 – Jun 2026

Brighton(back from loan)Jun 2025 – Jun 2025

Portsmouth(on loan)Aug 2024 – Jun 2025

Brightonuntil Aug 2024

About Mark O’Mahony

Mark O’Mahony is a 21-year-old centre-forward who plays for Burton Albion, born on January 14, 2005. He is from Republic of Ireland. Burton Albion currently sit 14th of 24 in the League One.

This season

In the current season, Mark O’Mahony has made 1 appearances with 0 goals and 0 assists across 8 minutes.

Mark O’Mahony's next match is on November 14, 2026, when Burton Albion face Milton Keynes Dons away in the League One.

Field Insider's view

Field Insider currently rates Mark O’Mahony at 38.5 with a Season form score of 0. See the full scout report for strengths, watch-points and the market-value outlook.

His honours include 1 career title — among them the First Division. Full list in the career record.

Career

Across 5 recorded seasons, Mark O’Mahony has totalled 67 club appearances with 19 goals and 0 assists for 6 different clubs. His busiest campaign came in 2025/26, with 16 appearances for Reading.

Mark O’Mahony's career has also included time at Brighton, Reading and Portsmouth.

On the international stage, Mark O’Mahony has represented Republic of Ireland U21, Republic of Ireland U19, Republic of Ireland U17 — 19 caps and 9 goals in our records.

Transfer news

No transfer news found for this player.

Profile

Season stats

Also this season

Performance data · by competition

Career

Scout report

Output in context · Burton Albion finished 14th of 24 · a mid-table side

Watch points