2021 Open de Rennes – Singles

Arthur Rinderknech was the defending champion but lost in the semifinals to Benjamin Bonzi.

Singles
2021 Open de Rennes
Champion	Benjamin Bonzi
Runner-up	Mats Moraing
Score	7–6(7–3), 7–6(7–3)

Main article: 2021 Open de Rennes

Bonzi won the title after defeating Mats Moraing 7–6^(7–3), 7–6^(7–3) in the final.

Seeds

1. Richard Gasquet (semifinals)
2. Arthur Rinderknech (semifinals)
3. Benjamin Bonzi (champion)
4. Gilles Simon (first round)
5. Andy Murray (second round)
6. Lucas Pouille (quarterfinals)
7. Grégoire Barrère (second round)
8. Tomáš Macháč (second round)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• SE = Special exempt
• PR = Protected ranking
• ITF = ITF entry
• JE = Junior exempt
• w/o = Walkover
• r = Retired
• d = Defaulted
• SR = Special ranking

Finals

	Semifinals							Final
	1	Richard Gasquet	4	7	2
		Mats Moraing	6	5	6
									Mats Moraing	63	63
								3	Benjamin Bonzi	77	77
	3	Benjamin Bonzi	69	77	6
	2	Arthur Rinderknech	711	64	1

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	R Gasquet	77	6
	WC	K Jacquet	64	3				1	R Gasquet	6	6
		B Schnur	4	4				Q	C Chidekh	1	4
	Q	C Chidekh	6	6											1	R Gasquet	78	7
	Q	M Guinard	4	3												R Safiullin	66	5
		R Safiullin	6	6					R Safiullin	6	4	6
		Y Maden	3	1				5/WC	A Murray	2	6	1
	5/WC	A Murray	6	6																		1	R Gasquet	4	7	2
	4	G Simon	3	2																			M Moraing	6	5	6
	Alt	T Gabashvili	6	6				Alt	T Gabashvili	4	6	6
		E Escobedo	7	6					E Escobedo	6	2	3
		C Lestienne	5	1											Alt	T Gabashvili	2	63
		M Moraing	4	7	6											M Moraing	6	77
	WC	H Mayot	6	5	2				M Moraing	711	6
	Q	C Hemery	1	1				8	T Macháč	69	1
	8	T Macháč	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	G Barrère	79	7
		T van Rijthoven	67	5				7	G Barrère	67	6	4
	Q	A Bega	2	1					L Broady	79	4	6
		L Broady	6	6												L Broady	4	2
		K Żuk	7	6											3	B Bonzi	6	6
	LL	M Rosenkranz	5	3					K Żuk	63	3
		E Ymer	3	4				3	B Bonzi	77	6
	3	B Bonzi	6	6																		3	B Bonzi	69	77	6
	6	L Pouille	5	6	6																	2	A Rinderknech	711	64	1
		M Janvier	7	4	3			6	L Pouille	3	6	6
	LL	D Added	3	4					A Hoang	6	3	4
		A Hoang	6	6											6	L Pouille	3	63
		G Soeda	64	4											2	A Rinderknech	6	77
		T Lamasine	77	6					T Lamasine	68	2
		T Kamke	3	6	3			2	A Rinderknech	710	6
	2	A Rinderknech	6	3	6

External links

• Main draw
• Qualifying draw