2025 Nottingham Open – Men's singles

Jacob Fearnley was the defending champion^[1] but chose not to defend his title.

Men's singles
2025 Nottingham Open
Champion	Marin Čilić
Runner-up	Shintaro Mochizuki
Score	6–2, 6–3

Further information: 2025 Nottingham Open

Marin Čilić won the title after defeating Shintaro Mochizuki 6–2, 6–3 in the final.^[2] At 36 years and eight months old, Čilić became the oldest grass court champion in Challenger history. Mochizuki was the first Japanese finalist at the tournament.^[3]

Seeds

1. Luca Nardi (withdrew)
2. Marin Čilić (champion)
3. Brandon Holt (first round)
4. Christopher Eubanks (withdrew)
5. Daniel Elahi Galán (first round)
6. Tomás Barrios Vera (quarterfinals)
7. Arthur Cazaux (first round)
8. Tristan Boyer (second round)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• ITF = ITF entry
• PR = Protected ranking
• SR = Special ranking
• SE = Special exempt
• JE = Junior exempt
• JR = Junior Accelerator Programme entrant
• CO = College Accelerator Programme entrant
• NG = Next Gen Accelerator Program entrant
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
	LL	Colton Smith	2	2
	SE	Shintaro Mochizuki	6	6
								SE	Shintaro Mochizuki	2	3
								2	Marin Čilić	6	6
		Martín Landaluce	78	4	67
	2	Marin Čilić	66	6	79

Top half

	First round							Second round							Quarterfinals							Semifinals
	Q	J McCabe	6	77
	WC	G Loffhagen	3	64				Q	J McCabe	7	3	3
	SE	M Trungelliti	2	6	3			LL	C Smith	5	6	6
	LL	C Smith	6	4	6										LL	C Smith	65	6	6
	WC	J Pinnington Jones	3	712	3											E Nava	77	4	4
		E Nava	6	610	6				E Nava	77	6
	WC	R Peniston	5	6	6			WC	R Peniston	65	4
	5	DE Galán	7	4	2																	LL	C Smith	2	2
	3	B Holt	3	4																		SE	S Mochizuki	6	6
		J Faria	6	6					J Faria	7	6
	LL	E Spizzirri	7	4	4			Q	J Choinski	5	3
	Q	J Choinski	5	6	6											J Faria	2	0
		P-H Herbert	4	67											SE	S Mochizuki	6	6
	SE	S Mochizuki	6	79				SE	S Mochizuki	6	6
		M Krueger	1	5				8	T Boyer	2	3
	8	T Boyer	6	7

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	A Cazaux	4	3
		A Mannarino	6	6					A Mannarino	6	5	5
		M Landaluce	6	2	6				M Landaluce	4	7	7
	NG	N Budkov Kjær	2	6	2											M Landaluce	63	6	6
		T Atmane	4	6	6											T Atmane	77	2	3
	Q	M Gigante	6	4	4				T Atmane	5	6	6
		F Fognini	3	65				Q	A Fery	7	3	4
	Q	A Fery	6	77																			M Landaluce	78	4	67
	6	T Barrios Vera	6	6																		2	M Čilić	66	6	79
	Q	J Trotter	3	4				6	T Barrios Vera	6	710
		T Schoolkate	6	6					T Schoolkate	2	68
		A Blockx	3	2											6	T Barrios Vera	1	3
	PR	L Harris	78	6											2	M Čilić	6	6
		V Royer	66	2				PR	L Harris	6	4	1r
	Q	H Grenier	3	2				2	M Čilić	2	6	3
	2	M Čilić	6	6