| Como challenger | Round | Result | H | A | 
		
			| 31.08. |  | Ferra / Pirai - Frant / Wehne | R16 | 4-6, 6-4, 10-8 | 2.19 | 1.59 | 
		
			| Prague 5 challenger | Round | Result | H | A | 
		
			| 24.08. |  | Cueva / Menen - Frant / Squir | R16 | 6-3, 6-2 | 1.30 | 3.14 | 
		
			| Meerbusch challenger | Round | Result | H | A | 
		
			| 11.08. |  | Oberl / Oswal - Frant / Molle | QF | 6-3, 6-2 | 1.29 | 3.31 | 
		
			| 10.08. |  | Frant / Molle - Arrib / Sanch | R16 | 7-63, 6-2 | 1.87 | 1.84 | 
		
			| Futures 2022 | Round | Result | H | A | 
		
			| 06.08. |  | Hassa / Lamas - Frant / Sandk | F | 6-4, 6-3 | 1.70 | 2.02 | 
		
			| 04.08. |  | Frant / Sandk - Delli / Zebal | SF | 6-3, 6-3 | 2.20 | 1.55 | 
		
			| 03.08. |  | Frant / Sandk - Cubel / Pichl | QF | 6-1, 6-4 | 1.32 | 3.10 | 
		
			| 02.08. |  | Frant / Sandk - Ricca / Sorre | R16 | 7-610, 6-3 | 1.26 | 3.40 | 
		
			| 16.07. |  | Frant / Sandk - Gentz / Zima | F | 6-4, 6-2 | 1.19 | 4.12 | 
		
			| 15.07. |  | Frant / Sandk - Belob / Uzhyl | SF | 6-2, 4-6, 10-3 | 1.50 | 2.36 | 
		
			| 14.07. |  | Frant / Sandk - Molle / Morai | QF | 6-1, 6-1 | 1.27 | 3.43 | 
		
			| 12.07. |  | Frant / Sandk - Opitz / Stein | R16 | 6-1, 6-2 | 1.68 | 2.05 | 
		
			| 08.07. |  | Opitz / Stein - Frant / Sandk | SF | 6-2, 7-63 | 2.89 | 1.35 | 
		
			| 07.07. |  | Frant / Sandk - Oliel / Vrben | QF | 6-4, 6-4 | 1.81 | 1.88 | 
		
			| 05.07. |  | Frant / Sandk - Agarw / Carip | R16 | 6-1, 6-2 | 1.05 | 7.70 | 
		
			| Luedenscheid challenger | Round | Result | H | A | 
		
			| 29.06. |  | Diaz / Rodri - Frant / Sandk | R16 | 4-6, 6-3, 10-8 | 1.59 | 2.12 | 
		
			| Futures 2022 | Round | Result | H | A | 
		
			| 25.06. |  | Chand / Prasa - Frant / Sandk | F | 7-65, 6-4 | 2.09 | 1.65 | 
		
			| 25.06. |  | Frant / Sandk - Gadam / Schoo | SF | 6-3, 6-3 | 1.52 | 2.34 | 
		
			| 23.06. |  | Frant / Sandk - Llane / Ronca | QF | 6-4, 6-4 | 1.21 | 3.95 | 
		
			| 21.06. |  | Frant / Sandk - Hornu / Vanka | R16 | 6-1, 6-3 | 1.07 | 6.82 | 
		
			| 17.06. |  | Knaff / Rodes - Frant / Sandk | SF | 7-65, 7-64 | 2.08 | 1.66 | 
		
			| 16.06. |  | Frant / Sandk - D'hul / Merre | QF | 6-3, 6-2 | 1.05 | 7.19 | 
		
			| 15.06. |  | Frant / Sandk - Hoogm / Unger | R16 | 6-0, 6-1 | 1.07 | 6.35 | 
		
			| 10.06. |  | Bitto / Vrben - Frant / Sandk | SF | 6-3, 3-6, 10-7 | 2.22 | 1.56 | 
		
			| 09.06. |  | Frant / Sandk - Karah / Setki | QF | 6-3, 6-3 | 1.04 | 8.41 | 
		
			| 07.06. |  | Frant / Sandk - Hodzi / Nince | R16 | 6-2, 6-4 | 1.17 | 4.37 | 
		
			| Troisdorf challenger | Round | Result | H | A | 
		
			| 25.05. |  | Barri / Mena - Frant / Sandk | R16 | 6-2, 7-65 | 1.74 | 1.89 | 
		
			| Futures 2022 | Round | Result | H | A | 
		
			| 21.05. |  | Frant / Sandk - Genge / Polja | F | 6-3, 4-6, 10-7 | 2.30 | 1.54 | 
		
			| 20.05. |  | Frant / Sandk - Bolar / Krumi | SF | 7-5, 4-6, 10-3 | 1.49 | 2.43 | 
		
			| 19.05. |  | Frant / Sandk - Damm / Damm | QF | 7-5, 6-3 | 1.18 | 4.25 | 
		
			| 17.05. |  | Frant / Sandk - Cerny / Havli | R16 | 6-3, 6-0 | 1.11 | 5.63 | 
		
			| Heilbronn challenger | Round | Result | H | A | 
		
			| 10.05. |  | Marti / Weiss - Frant / Sandk | R16 | 7-5, 65-7, 10-6 | 1.39 | 2.59 | 
		
			| Futures 2022 | Round | Result | H | A | 
		
			| 07.05. |  | Frant / Sandk - Perei / Rover | F | 7-65, 6-4 | 1.70 | 2.03 | 
		
			| 06.05. |  | Frant / Sandk - Echev / Opitz | SF | 6-4, 6-3 | 1.28 | 3.29 | 
		
			| 05.05. |  | Frant / Sandk - Bertr / Gomes | QF | 6-4, 6-4 | 1.11 | 5.11 | 
		
			| 04.05. |  | Frant / Sandk - Altun / Nince | R16 | 6-2, 6-2 | 1.28 | 3.31 | 
		
			| 29.04. |  | Arrib / Sanch - Frant / Sandk | SF | 6-2, 3-6, 10-8 | 1.40 | 2.69 | 
		
			| 28.04. |  | Frant / Sandk - Setki / Sulta | QF | 6-2, 3-6, 10-3 | 2.34 | 1.52 | 
		
			| 26.04. |  | Frant / Sandk - Bieli / Galik | R16 | 6-4, 6-1 |  |  |