Player

🇦🇺 Stefan Kostic

Career matches 43

Wins 7

Losses 36

Win rate 16.3%

Elo (current) —

Surface breakdown

Hard 33.3% 1W – 2L (3 matches)

Clay 13.5% 5W – 32L (37 matches)

Grass 33.3% 1W – 2L (3 matches)

Career form (last 10)

LWLLWLLWLW

Newest on left. Hover for details.

Head-to-head (top 5 opponents)

Opponent	Played	W	L	W%
Nikola Lulic	2	2	0	100%
Alexandar Balj	2	2	0	100%
Harrison Satara	1	1	0	100%
Jamie Mackenzie	1	0	1	0%
Anton Arzhankin	1	0	1	0%

Recent matches

1–43 of 43

Date	Tournament	Round	Winner	Loser	Score	Surface
2026-03-23	M15 Swan Hill	R3	Adrian Arcon	Stefan Kostic	6-4 6-3	Grass
2026-03-16	M15 Wodonga	R3	Stefan Kostic	Harry Roberts	7-5 6-2	Grass
2026-03-16	M15 Wodonga	R1	Benjamin O'Connell	Stefan Kostic	6-4 6-4	Grass
2026-03-02	M25 Launceston	R2	Duje Markovina	Stefan Kostic	6-4 6-2	Hard
2026-03-02	M25 Launceston	R1	Stefan Kostic	Harrison Satara	7-6(10) 3-6 15-13	Hard
2026-02-23	M25 Burnie	R2	Jamie Mackenzie	Stefan Kostic	6-2 6-2	Hard
2025-09-22	M25 Zlatibor	R3	Anton Arzhankin	Stefan Kostic	6-3 6-2	Clay
2025-09-22	M25 Zlatibor	R2	Stefan Kostic	Nikola Lulic	7-5 6-3	Clay
2025-09-15	M15 Kursumlijska Banja	R2	Aleksandar Mihailovic	Stefan Kostic	7-6(3) 3-6 10-7	Clay
2025-09-08	M15 Kursumlijska Banja	R1	Stefan Kostic	Justin Roberts	6-2 3-6 10-6	Clay
2025-09-08	M15 Kursumlijska Banja	R1	Juan Bautista Otegui	Stefan Kostic	6-3 6-1	Clay
2025-09-01	M15 Kursumlijska Banja	R1	Radoslav Shandarov	Stefan Kostic	3-6 6-4 10-4	Clay
2025-08-18	M15 Pirot	R3	Filiberto Fumagalli	Stefan Kostic	6-0 6-4	Clay
2025-08-18	M15 Pirot	R2	Stefan Kostic	Alexandar Balj	3-6 6-2 10-7	Clay
2025-08-11	M15 Pirot	R3	George Lazarov	Stefan Kostic	6-1 2-6 10-6	Clay
2025-08-11	M15 Pirot	R2	Stefan Kostic	Alexandar Balj	6-2 6-0	Clay
2025-07-21	M15 Kursumlijska Banja	R2	Ferdinand Livet Novkirichka	Stefan Kostic	6-4 6-2	Clay
2025-07-07	M15 Kursumlijska Banja	R1	Aleksa Pisaric	Stefan Kostic	6-4 6-3	Clay
2025-06-23	M15 Kursumlijska Banja	R1	Vasil Dimitrov	Stefan Kostic	6-7 6-3 10-4	Clay
2025-06-16	M15 Kursumlijska Banja	R1	Piet Luis Pinter	Stefan Kostic	6-2 6-1	Clay
2025-06-09	M15 Kursumlijska Banja	R1	Nikola Djosic	Stefan Kostic	7-6(5) 6-0	Clay
2025-06-02	M25 Belgrade	R2	Boris Butulija	Stefan Kostic	6-2 6-3	Clay
2025-06-02	M25 Belgrade	R1	Stefan Kostic	Nikola Lulic	7-6(1) 6-2	Clay
2025-05-12	M15 Kursumlijska Banja	R1	Karim Bennani	Stefan Kostic	6-2 6-3	Clay
2025-04-28	M15 Kursumlijska Banja	R1	Aljaz Jeran	Stefan Kostic	6-2 6-2	Clay
2025-04-21	M15 Kursumlijska Banja	R1	Maties Torres Ramis	Stefan Kostic	6-2 4-6 10-8	Clay
2024-08-26	M15 Kursumlijska Banja	R32	Iannis Miletich	Stefan Kostic	6-4 6-2	Clay
2024-08-19	M15 Pirot	R32	Demetris Azoides	Stefan Kostic	6-0 6-2	Clay
2024-08-12	M15 Kursumlijska Banja	R32	Stefan Latinovic	Stefan Kostic	6-1 7-6(4)	Clay
2024-08-05	M15 Kursumlijska Banja	R16	Tommaso Compagnucci	Stefan Kostic	6-1 6-1	Clay
2024-07-29	M15 Kursumlijska Banja	R32	Franco Ribero	Stefan Kostic	6-2 6-2	Clay
2024-07-22	M15 Kursumlijska Banja	R32	Juan Manuel La Serna	Stefan Kostic	6-4 6-3	Clay
2024-07-15	M15 Kursumlijska Banja	R32	Lorenzo Gagliardo	Stefan Kostic	6-0 6-3	Clay
2024-07-01	M15 Kursumlijska Banja	R32	Benjamin Torrealba	Stefan Kostic	6-1 6-1	Clay
2024-06-17	M15 Kursumlijska Banja	R32	Andrej Nedic	Stefan Kostic	6-3 6-3	Clay
2024-05-27	M15 Kursumlijska Banja	R32	Sean Hess	Stefan Kostic	6-0 6-4	Clay
2024-05-13	M15 Kursumlijska Banja	R32	Simon Anthony Ivanov	Stefan Kostic	6-3 6-2	Clay
2024-04-29	M15 Kursumlijska Banja	R32	Alexander Frusina	Stefan Kostic	6-3 6-2	Clay
2023-06-05	M15 Sarajevo	R32	Luka Mikrut	Stefan Kostic	6-2 6-1	Clay
2023-05-29	M25 Kiseljak	R32	Nicolas Zanellato	Stefan Kostic	6-1 6-1	Clay
2023-05-22	M15 Brcko	R32	Alexandre Aubriot	Stefan Kostic	6-0 6-1	Clay
2023-05-15	M15 Prijedor	R32	Tim Ruehl	Stefan Kostic	6-1 6-1	Clay
2023-05-08	M15 Doboj	R32	Kirill Mishkin	Stefan Kostic	6-2 1-6 6-1	Clay

Aliases

atp

Stefan Kostic (k0km)

atp_short

S. Kostic (k0km)

itf

Stefan Kostic (800596469)

sackmann

Stefan Kostic (135939)

variant

S Kostic