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KOKarl O'Sullivan

Karl O'Sullivan

€800KMarket Value
Treaty United
Treaty United•Midfielder•
Republic of IrelandRepublic of Ireland
5.8
Season Score
26
Oct 31, 1999
175 cm
Height
0.07
Goals/Match
11
Shirt Number
Card stats based on
2026

Performance Overview

Season Performance 24/25
All Competitions
Matches
29
Goals
1
Assists
4
Goal Contributions
5
Mins/game
84
Avg Rating
6.59
Career Statistics

Career

Career Progress

Career Progress

Appearances per Season

Appearance Distribution

69
Full match
72
Substituted off
52
From Bench

Karl O'Sullivan — computed career insights

Career figures, computed
Best-rated season
2024 · 6.81Premier Division
Lowest-rated season
2023 · 6.48Premier Division
Career involvement (league)
0.19 G+A per 9013 goals + 12 assists across 10 league seasons (per-90 from 11679 minutes on record)
League seasons on record
10 (2017–2025)
Clubs with recorded appearances
6
Among position peers, computed
Rating percentile
83rdrating 6.61 vs 53 rated peers
Goals rank
#25 of 531 goal
G+A per 90 percentile
58th0.21 per 90

Cohort: 53 First Division (Ireland) midfielders, 2025, min. 450 minutes. Computed by ranking the full league corpus, not taken from any feed.

Figures computed from the GioScore season-stats database · as of 2026-09-03

Rival Clubs(21)

Player stats against each opponent club

TeamMPWDLGA
Shamrock RoversShamrock Rovers81340020
St Patrick'sSt Patrick's52030110
Cobh RamblersCobh Ramblers31021000
Sligo RoversSligo Rovers30211000
UCDUCD32101000
Athlone TownAthlone Town32100110
Cork CityCork City20020000
BohemiansBohemians20020010
Finn HarpsFinn Harps22001200
Derry CityDerry City20110000
KerryKerry21100000
Galway UnitedGalway United10010000
ShelbourneShelbourne10010010
Bray WanderersBray Wanderers11000000
Drogheda UnitedDrogheda United10010000
Longford TownLongford Town10100000
DundalkDundalk10010000
Green GullyGreen Gully11000010
Waterford UnitedWaterford United10010000
Wexford YouthsWexford Youths10100000
1–20 of 21
Transfers

Transfers

Transfer History

Galway United
Galway United
Treaty United
Treaty United
Feb 9, 2025Free Transfer
Sligo Rovers
Sligo Rovers
Galway United
Galway United
Jan 4, 2024Free Transfer
Finn Harps
Finn Harps
Sligo Rovers
Sligo Rovers
Jan 1, 2022Free Transfer

About Karl O'Sullivan

Karl O'Sullivan's 2025 First Division (Ireland) season produced 1 goal and 4 assists across 26 appearances (2,125 minutes) — 0.21 goal involvements per 90. GioScore's computed rating for the season averages 6.61. Measured against 53 First Division (Ireland) midfielders with at least 450 minutes in 2025, he ranks in the 83rd percentile by match rating — above the cohort median; on goals he ranks 25th of 53.

At his best he averaged 6.81 in 2024, Premier Division; at his worst, 6.48 in 2023.

His recorded league football covers 2 domestic leagues: Premier Division (148 appearances, 10 goals) and First Division (Ireland) (37 appearances, 3 goals). Availability: 25-plus league games in 5 of the 10 campaigns on record. His busiest three-season stretch was 2020–2022: 75 league appearances, 25 a season.

Frequently Asked Questions

What position does Karl O'Sullivan play?
Karl O'Sullivan plays as a Midfielder for Treaty United in the First Division (Ireland). He has started 24 of his 26 appearances in the First Division (Ireland) 2025.
What team does Karl O'Sullivan play for?
Karl O'Sullivan currently plays for Treaty United in the First Division (Ireland). He has 1 goal in 26 appearances in the First Division (Ireland) 2025. He is a regular in the Treaty United squad.
How old is Karl O'Sullivan?
Karl O'Sullivan is 26 years old, born on October 31, 1999. He is from Republic of Ireland.
How tall is Karl O'Sullivan?
Karl O'Sullivan is 175 cm tall.
What nationality is Karl O'Sullivan?
Karl O'Sullivan is from Republic of Ireland and represents them at international level. At club level, he plays for Treaty United.