2021 Sparkassen ATP Challenger – Singles

Ilya Ivashka was the defending champion but chose not to defend his title.

Singles
2021 Sparkassen ATP Challenger
Champion	Oscar Otte
Runner-up	Maxime Cressy
Score	7–6(7–5), 6–4

Main article: 2021 Sparkassen ATP Challenger

Oscar Otte won the title after defeating Maxime Cressy 7–6^(7–5), 6–4 in the final.

Seeds

1. Oscar Otte (champion)
2. Maxime Cressy (final)
3. Quentin Halys (second round)
4. Emilio Gómez (first round)
5. Federico Gaio (quarterfinals)
6. Fernando Verdasco (first round)
7. Marc-Andrea Hüsler (second round)
8. Alessandro Giannessi (first 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	Oscar Otte	77	6
		Jack Draper	63	4
								1	Oscar Otte	77	6
								2	Maxime Cressy	65	4
		Mirza Bašić	5	2
	2	Maxime Cressy	7	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	O Otte	77	77
		R Marcora	61	64				1	O Otte	6	6
		M Bachinger	6	69	78				M Bachinger	3	1
	Q	Tobias Simon	3	711	66										1	O Otte	6	6
		R Peniston	6	6												R Peniston	2	4
	Q	A Cozbinov	3	2					R Peniston	77	6
		GM Moroni	4	61				7	M-A Hüsler	61	4
	7	M-A Hüsler	6	77																		1	O Otte	77	6
	4	E Gómez	4	2																			J Draper	63	4
		J Draper	6	6					J Draper	6	77
	WC	M Arnaldi	69	0				Q	L Miedler	4	61
	Q	L Miedler	711	6												J Draper	66	77	6
		D Stricker	6	3	7										5	F Gaio	78	65	2
		M Viola	4	6	5				D Stricker	65	62
		N Kuhn	3	65				5	F Gaio	77	77
	5	F Gaio	6	77

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	F Verdasco	66	6	3
		V Sachko	78	4	6				V Sachko	6	6
		B Gojo	6	77					B Gojo	2	4
		D Masur	4	64												V Sachko	63	6	2
		M Bašić	6	6												M Bašić	77	3	6
		E Karlovskiy	4	3					M Bašić	714	6
	WC	L Nardi	4	3				3	Q Halys	612	3
	3	Q Halys	6	6																			M Bašić	5	2
	8	A Giannessi	78	3	5																	2	M Cressy	7	6
	Q	N Fatić	66	6	7			Q	N Fatić	61	2
		M Copil	6	77					M Copil	77	6
	WC	Alexander Weis	4	65												M Copil	68	4
		C-h Tseng	6	3	4										2	M Cressy	710	6
		R Quiroz	4	6	6				R Quiroz	63	4
		T van Rijthoven	66	5				2	M Cressy	77	6
	2	M Cressy	78	7

External links

• Main draw
• Qualifying draw