Singles
2021 Moselle Open
Final
Champion	Hubert Hurkacz
Runner-up	Pablo Carreño Busta
Score	7–6(7–2), 6–3
Details
Draw	28 (4 Q / 3 WC )
Seeds	8
Events
Singles Doubles
← 2019 · Moselle Open · 2022 →

Jo-Wilfried Tsonga was the reigning champion from when the tournament was last held in 2019,^[1] but chose not to participate this year.

Hubert Hurkacz won the title, defeating Pablo Carreño Busta in the final, 7–6^(7–2), 6–3.

The top four seeds received a bye into the second round.

	Semifinals							Final
	1	Hubert Hurkacz	6	77
	Q	Peter Gojowczyk	4	64
								1	Hubert Hurkacz	77	6
								2	Pablo Carreño Busta	62	3
	3	Gaël Monfils	5	68
	2	Pablo Carreño Busta	7	710

	First round							Second round							Quarterfinals							Semifinals
								1	H Hurkacz	6	6
	WC	L Pouille	3	6	6			WC	L Pouille	2	3
	Q	B Schnur	6	4	4										1	H Hurkacz	77	6
	WC	G Barrère	3	4											WC	A Murray	64	3
		V Pospisil	6	6					V Pospisil	3	3
	WC	A Murray	4	6	6			WC	A Murray	6	6
	6	U Humbert	6	3	2																	1	H Hurkacz	6	77
																						Q	P Gojowczyk	4	64
								4	A de Minaur	5	65
		A Rinderknech	6	63	4				M Giron	7	77
		M Giron	3	77	6											M Giron	6	1	3
	LL	A Hoang	2	6	4										Q	P Gojowczyk	3	6	6
	Q	P Gojowczyk	6	3	6			Q	P Gojowczyk	6	77
	Q	A Müller	6	1	3			7	K Khachanov	3	62
	7	K Khachanov	4	6	6

	First round							Second round							Quarterfinals							Semifinals
	8	N Basilashvili	6	77
		G Mager	3	65				8	N Basilashvili	0	6	77
		A Davidovich Fokina	64	77	6				A Davidovich Fokina	6	4	64
	PR	G Simon	77	62	2										8	N Basilashvili	3	3
	LL	P Kohlschreiber	77	6											3	G Monfils	6	6
		M Cecchinato	63	3				LL	P Kohlschreiber	62	4
								3	G Monfils	77	6
																						3	G Monfils	5	68
	5	L Sonego	6	6																		2	P Carreño Busta	7	710
		M Fucsovics	3	2				5	L Sonego	78	4	4
	Q	H Rune	6	6				Q	H Rune	66	6	6
	LL	B Zapata Miralles	0	0											Q	H Rune	4	6	4
	Alt	M Ymer	7	6											2	P Carreño Busta	6	3	6
		J-L Struff	5	3				Alt	M Ymer	5	2
								2	P Carreño Busta	7	6

	First round							Qualifying competition
	Alt	Brayden Schnur	3	6	6
		Roberto Marcora	6	4	2
								Alt	Brayden Schnur	6	6
								WC	Harold Mayot	4	1
	WC	Harold Mayot	64	7	6
	7	Federico Gaio	77	5	4

	First round							Qualifying competition
	2	Peter Gojowczyk	6	6
	WC	Luca Van Assche	2	3
								2	Peter Gojowczyk	6	4	6
								6	Antoine Hoang	4	6	2
	PR	Yannick Maden	2	4
	6	Antoine Hoang	6	6

	First round							Qualifying competition
	3	Philipp Kohlschreiber	7	6
		Denis Istomin	5	3
								3	Philipp Kohlschreiber	7	3	5
								5	Holger Rune	5	6	7
		Thomas Fabbiano	6	3	4
	5	Holger Rune	3	6	6

	First round							Qualifying competition
	4	Bernabé Zapata Miralles	3	6	6
		Alejandro Tabilo	6	4	1
								4	Bernabé Zapata Miralles	61	6	0
									Alexandre Müller	77	4	6
		Alexandre Müller	3	6	6
	8	Quentin Halys	6	3	4

• Main draw
• Qualifying draw