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KAKristoffer Ajer

Kristoffer Ajer

€16MMarket Value
Brentford
Brentford•Defender•
NorwayNorway
6.7
Season Score
28
Apr 17, 1998
198 cm
Height
0.02
Goals/Match
20
Shirt Number
Card stats based on
2025/2026

Performance Overview

Season Performance 25/26
All Competitions
50Matches
1Goals
1Assists
2Goal Contributions
54Mins/game
6.71Avg Rating
Career Statistics

Career

Career Progress

Career Progress

Appearances per Season

Appearance Distribution

90
Full match
33
Substituted off
21
From Bench

Kristoffer Ajer — computed career insights

League seasons, computed
SeasonLeagueAppsMinGoalsAssistsG+A / 90Rating
2014Eliteserien13—10——
2015Eliteserien302581830.38—
2016/2017Premiership14—00——
2016Eliteserien11—01——
2017/2018Premiership311845000—
2018/2019Premiership28212010.42—
2019/2020Premiership232059210.137.37
2020/2021Premiership353043230.157.18
2021/2022Premier League271987120.146.95
2022/2023Premier League97660006.5
2023/2024Premier League281832210.156.89
2024/2025Premier League224960006.73
2025/2026Premier League291520010.066.5

Domestic league competitions only (SportMonks sub_type='domestic'); national-team, continental and cup competitions are excluded. Classification resolved by league id against the canonical leagues index. G+A/90 computed from minutes actually played.

Career figures, computed
Best-rated season
2019/2020 · 7.37Premiership
Lowest-rated season
2022/2023 · 6.5Premier League
Rating trend
-0.36last 2 rated seasons vs career average before them (min. 5 apps)
Career involvement (league)
0.15 G+A per 9016 goals + 13 assists across 13 league seasons (per-90 from 16341 minutes on record)
League seasons on record
13 (2014–2026)
Clubs with recorded appearances
6
Among position peers, computed
Rating percentile
8thrating 6.5 vs 131 rated peers
Goals rank
#64 of 1310 goals
G+A per 90 percentile
44th0.06 per 90

Cohort: 131 Premier League defenders, 2025/2026, 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 2026-07-07

Rival Clubs(103)

Player stats against each opponent club

TeamMPWDLGA
AberdeenAberdeen1410221020
MotherwellMotherwell1410221020
RangersRangers134360030
Hamilton AcademicalHamilton Academical1312100000
KilmarnockKilmarnock128311020
HeartsHearts129120020
St. JohnstoneSt. Johnstone129301001
HibernianHibernian113620010
ArsenalArsenal101360010
West Ham UnitedWest Ham United95220010
ChelseaChelsea92430100
Wolverhampton WanderersWolverhampton Wanderers94320020
Ross CountyRoss County97021010
LivingstonLivingston94410010
St. MirrenSt. Mirren97110010
EvertonEverton82240010
AFC BournemouthAFC Bournemouth85300000
DundeeDundee85210000
Tottenham HotspurTottenham Hotspur71240020
LiverpoolLiverpool71150020
1–20 of 103

Rival National Teams(34)

Player stats against each opponent national team

TeamMPWDLGA
SlovakiaSlovakia21100000
ItalyItaly22000000
NetherlandsNetherlands20110010
EstoniaEstonia22000000
SpainSpain20020010
Faroe IslandsFaroe Islands22000000
MoldovaMoldova22000010
JordanJordan11001000
GreeceGreece10010000
FinlandFinland11000000
DenmarkDenmark10010000
New ZealandNew Zealand10100000
CyprusCyprus11000000
SloveniaSlovenia11000000
IcelandIceland11000000
RomaniaRomania11000000
ArmeniaArmenia11000000
AlbaniaAlbania11000000
AustriaAustria10010000
IsraelIsrael11001000
1–20 of 34
Transfers

Transfers

Transfer Value History

Last Transfer: €15.7M

Transfer History

Celtic
Celtic
Brentford
Brentford
Jul 21, 2021Transfer€16M
Kilmarnock
Kilmarnock
Celtic
Celtic
May 31, 2017End of loan
Celtic
Celtic
Kilmarnock
Kilmarnock
Jan 20, 2017Loan
Start
Start
Celtic
Celtic
Jul 1, 2016Transfer€600K
Lillestrøm U19
Lillestrøm U19
Start
Start
Jul 15, 2014Transfer
Trophies

Trophies & Awards

9 titles won

Championships

Premiership
Premiership
3x Winner(2019/2020, 2018/2019, 2017/2018)
3x
League Cup
League Cup
3x Winner(2017, 2019/2020, 2018/2019)
3x
Scottish Cup
Scottish Cup
2x Winner(2018/2019, 2017/2018)
2x
Premier League Cup
Premier League Cup
1x Winner(2022/2023)
1x

About Kristoffer Ajer

29 Premier League appearances in 2025/2026 brought Kristoffer Ajer 1 assist, though no goals (1,520 minutes) — 0.06 goal involvements per 90. His average match rating for that season computes to 6.5. Against a 131-strong pool of Premier League defenders (2025/2026, min. 450 minutes), his match rating places in the 8th percentile, and 64th of 131 for goals scored.

The database holds 13 league seasons for him, from 2014 to 2026 across 6 clubs. Season ratings peak at 7.37 in 2019/2020, Premiership and bottom out at 6.5 in 2022/2023. His last two rated seasons average 0.36 below his earlier career level.

Full Career Record — Kristoffer Ajer

Club-by-club totals

ClubPeriodAppsGoalsAssistsMinutesYCRCRating
Celtic2016/2017 - 2020/20211777612025——7.15
Brentford2021/2022 - now140368282——6.65
Start2014/2015 - 2015/201655942671———
Norway (national team)2018 - now26202009——7.11
Kilmarnock2016/2017150190———
Total387191723068

Season-by-season statistics

SeasonClubAppsGoalsAssistsMinutesYCRCRating
25/26Norway (national team)111—883107.16
25/26Brentford390—1818406.25
24/25Brentford250—1245206.88
23/24Norway (national team)100—823206.63
23/24Brentford342—2099506.79
22/23Norway (national team)21—180007.97
22/23Brentford100—846006.42
21/22Norway (national team)30—12300—
21/22Brentford321—2274506.81
20/21Celtic462—3903107.04
19/20Celtic474—3994807.37
18/19Celtic441—166791—
17/18Celtic380—2371407.26
16/17Kilmarnock150—9020—

Frequently Asked Questions

What position does Kristoffer Ajer play?
Kristoffer Ajer plays as a Defender for Brentford in the Premier League.
What team does Kristoffer Ajer play for?
Kristoffer Ajer currently plays for Brentford in the Premier League.
How old is Kristoffer Ajer?
Kristoffer Ajer is 28 years old, born on April 17, 1998. At 28, he has already won 9 trophies in his professional career.
How tall is Kristoffer Ajer?
Kristoffer Ajer is 198 cm tall. He weighs 92 kg.
How many trophies has Kristoffer Ajer won?
Kristoffer Ajer has won 9 trophies throughout his career, demonstrating his quality at the highest competitive level. He currently plays for Brentford.