| Challenger Drummondville | 11/15 20:10 | 27 |
[347] Joel Schwaerzler v
Aidan Mayo
[437] |
3-6,4-6 | |
| Challenger Drummondville | 11/13 18:05 | 26 |
Facundo Mena
v
Joel Schwaerzler
|
Walkover | |
| Challenger Drummondville | 11/11 21:50 | 25 |
Nicolas Arseneault
v
Joel Schwaerzler
|
2-6,4-6 | |
| Challenger Knoxville | 11/06 01:30 | 25 |
Joel Schwaerzler v
Christopher Eubanks
|
4-6,1-6 | |
| ITF M25 Norwich | 10/29 12:50 | 25 |
Phoenix Weir
v
Joel Schwaerzler
|
6-3,5-7,6-4 | |
| ATP Vienna | 10/21 16:10 | 25 |
[3] Alexander Zverev
v
Joel Schwaerzler [347]
|
6-2,6-2 | |
| Challenger Valencia | 10/10 10:00 | 26 |
[177] Jan Choinski
v
Joel Schwaerzler [375]
|
6-3,6-2 | |
| Challenger Valencia | 10/08 11:35 | 25 |
[375] Joel Schwaerzler v
Vit Kopriva
[142] |
7-5,6-4 | |
| Challenger Valencia | 10/07 09:00 | 19 |
Andres Santamarta Roig
v
Joel Schwaerzler
|
2-6,4-6 | |
| Challenger Valencia | 10/06 11:00 | 14 |
Mihnea Maftei
v
Joel Schwaerzler
|
1-6,7-5,1-6 | |
| Challenger Braga | 09/29 15:35 | 14 |
[419] Francisco Rocha
v
Joel Schwaerzler [374]
|
7-5,6-3 | |
| Challenger Bad Waltersdorf | 09/17 11:00 | 25 |
[210] Carlos Taberner
v
Joel Schwaerzler [377]
|
6-4,6-3 | |
| Challenger Tulln | 09/04 09:35 | 25 |
[298] Ivan Gakhov
v
Joel Schwaerzler [375]
|
6-7,6-4,6-3 | |
| ITF M25 Oviedo | 08/28 08:00 | 26 |
Joel Schwaerzler v
Alejandro Garcia
|
6-7,6-7 | |
| ITF M25 Oviedo | 08/27 07:50 | 25 |
Joel Schwaerzler v
Mateo Luis Alvarez Sarmiento
|
6-3,6-4 | |
| Challenger Cordenons | 08/08 17:30 | 26 |
[388] Joel Schwaerzler v
Riccardo Bonadio
[389] |
5-7,3-6 | |
| Challenger Cordenons | 08/06 09:50 | 25 |
[274] Nerman Fatic
v
Joel Schwaerzler [388]
|
5-7,6-2,3-6 | |
| Challenger Liberec | 07/29 13:00 | 25 |
[288] Manuel Guinard
v
Joel Schwaerzler [395]
|
6-4,6-4 | |
| ATP Kitzbuhel | 07/22 11:35 | 25 |
[72] Thiago Seyboth Wild
v
Joel Schwaerzler [392]
|
6-2,7-6 | |
| Challenger Salzburg | 07/09 15:30 | 25 |
[392] Joel Schwaerzler v
Marc-Andrea Huesler
[229] 
|
2-6,3-6 | |
| Challenger Milan | 06/24 08:30 | 14 |
[393] Joel Schwaerzler v
Raul Brancaccio
[357] |
7-5,4-6,0-6 | |
| Challenger Skopje | 05/25 10:40 | 29 |
Kamil Majchrzak
v
Joel Schwaerzler
|
3-6,3-6 | |
| Challenger Skopje | 05/24 11:35 | 28 |
Gerard Campana Lee
v
Joel Schwaerzler
|
7-6,3-6,2-6 | |
| Challenger Skopje | 05/23 09:00 | 27 |
Andrew Paulson
v
Joel Schwaerzler
|
6-3,4-6,4-6 | |
| Challenger Skopje | 05/22 10:10 | 26 |
Joel Schwaerzler v
Ergi Kirkin
|
6-2,6-1 | |
| Challenger Skopje | 05/21 08:30 | 25 |
Joel Schwaerzler v
Sergey Fomin
|
Retired | |
| Challenger Mauthausen | 05/10 10:00 | 27 |
Joel Schwaerzler v
Dimitar Kuzmanov
|
2-6,3-6 | |
| Challenger Mauthausen | 05/09 11:00 | 26 |
Martin Landaluce
v
Joel Schwaerzler
|
4-6,2-6 | |
| Challenger Mauthausen | 05/07 11:40 | 25 |
Mats Rosenkranz
v
Joel Schwaerzler
|
6-7,4-6 | |
| Challenger Savannah | 04/25 21:30 | 26 |
Joel Schwaerzler v
Calvin Hemery
|
4-6,2-6 |