2021 Heilbronner Neckarcup – Singles

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

Singles
2021 Heilbronner Neckarcup
Champion	Bernabé Zapata Miralles
Runner-up	Daniel Elahi Galán
Score	6–3, 6–4

Main article: 2021 Heilbronner Neckarcup

Bernabé Zapata Miralles won the title after defeating Daniel Elahi Galán 6–3, 6–4 in the final.

Seeds

1. Jiří Veselý (first round)
2. Yannick Hanfmann (second round)
3. Dennis Novak (semifinals)
4. Daniel Elahi Galán (final)
5. Taro Daniel (quarterfinals)
6. Denis Kudla (first round)
7. Philipp Kohlschreiber (quarterfinals)
8. Mackenzie McDonald (semifinals)

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
		Bernabé Zapata Miralles	6	1	6
	3	Dennis Novak	3	6	3
									Bernabé Zapata Miralles	6	6
								4	Daniel Elahi Galán	3	4
	4	Daniel Elahi Galán	6	64	7
	8	Mackenzie McDonald	4	77	5

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	J Veselý	62	63
		O Otte	77	77					O Otte	2	1
		I Marchenko	3	62					B Zapata Miralles	6	6
		B Zapata Miralles	6	77												B Zapata Miralles	6	6
	WC	R Molleker	0	6	3											S Nagal	3	1
		A Hoang	6	3	6				A Hoang	6	1	4
		S Nagal	7	1	6				S Nagal	1	6	6
	6	D Kudla	5	6	1																		B Zapata Miralles	6	1	6
	3	D Novak	6	2	7																	3	D Novak	3	6	3
	WC	Y Maden	2	6	5			3	D Novak	77	4	7
	Q	M Moraing	77	6				Q	M Moraing	64	6	5
		H Laaksonen	62	2											3	D Novak	6	6
	LL	TM Etcheverry	6	6											5	T Daniel	4	4
	PR	A Kuznetsov	3	2				LL	TM Etcheverry	4	1
		D Altmaier	5	0				5	T Daniel	6	6
	5	T Daniel	7	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	P Kohlschreiber	6	6
	Q	M Janvier	4	3				7	P Kohlschreiber	3	6	6
		M-A Hüsler	77	4	63				B Nakashima	6	4	1
		B Nakashima	63	6	77										7	P Kohlschreiber	6	2	64
	Alt	A Giannessi	77	6											4	DE Galán	2	6	77
		P Gunneswaran	64	1				Alt	A Giannessi	77	67	4
		M Polmans	1	1				4	DE Galán	64	79	6
	4	DE Galán	6	6																		4	DE Galán	6	64	7
	8	M McDonald	6	4																		8	M McDonald	4	77	5
	Q	A Vukic	3	3r				8	M McDonald	6	4	6
	Alt	K Coppejans	6	6				Alt	K Coppejans	4	6	3
		C Taberner	2	1											8	M McDonald	6	6
	Q	E Kırkın	66	6	5										LL	J Menezes	3	3
	LL	J Menezes	78	2	7			LL	J Menezes	6	6
		T Griekspoor	0	4				2/WC	Y Hanfmann	4	3
	2/WC	Y Hanfmann	6	6