Doubles
2021 Sparkassen ATP Challenger
Champions	Antonio Šančić Tristan-Samuel Weissborn
Runners-up	Alexander Erler Lucas Miedler
Score	7–6(10–8), 4–6, [10–8]

Andre Begemann and Albano Olivetti were the defending champions^[1] but chose not to defend their title.

Antonio Šančić and Tristan-Samuel Weissborn won the title after defeating Alexander Erler and Lucas Miedler 7–6^(10–8), 4–6, [10–8] in the final.

Seeds

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

	First round							Quarterfinals							Semifinals							Final
	1	I Sabanov M Sabanov	6	4	[10]
		M Copil E Gómez	2	6	[6]			1	I Sabanov M Sabanov	6	6
		N Fatić A Šetkić	5	3					K Kivattsev A Virgili	2	2
		Kirill Kivattsev Augusto Virgili	7	6											1	I Sabanov M Sabanov	5	3
	3	A Erler L Miedler	6	6											3	A Erler L Miedler	7	6
	WC	Patric Prinoth Alexander Weis	3	2				3	A Erler L Miedler	6	77
		F Forti F Gaio	6	6					F Forti F Gaio	2	65
		B Lock CJ Lock	3	1																		3	A Erler L Miedler	68	6	[8]
		V Sachko T van Rijthoven	77	77																		2	A Šančić T-S Weissborn	710	4	[10]
		A Cozbinov M Cressy	64	62					V Sachko T van Rijthoven	77	3	[4]
		J Draper B Gojo	6	77					J Draper B Gojo	65	6	[10]
	4	D Hidalgo R Quiroz	4	64												J Draper B Gojo	6	3	[8]
	WC	M Arnaldi Samuel Vincent Ruggeri	6	62	[10]										2	A Šančić T-S Weissborn	3	6	[10]
	WC	Gabriel Moroder Erwin Tröbinger	1	77	[8]			WC	M Arnaldi S Vincent Ruggeri	4	4
		David Pichler David Poljak	64	711	[4]			2	A Šančić T-S Weissborn	6	6
	2	A Šančić T-S Weissborn	77	69	[10]

References

External links

• Main draw