| Challenger Barletta | 04/01 13:15 | 25 | [254] Enrico Dalla Valle v Steven Diez [327] | 2-6,6-0,6-3 | |
| Challenger Girona | 03/25 11:15 | 19 | [334] Felix Gill v Steven Diez [329] | Retired | |
| Challenger Girona | 03/24 10:20 | 14 | Carlos Taberner v Steven Diez | Cancelled | |
| Challenger Hamburg | 03/11 13:55 | 25 | [271] Henri Squire v Steven Diez [308] | 6-2,6-4 | |
| ITF M15 - Torello | 03/07 09:25 | 26 | Federico Iannaccone v Steven Diez | 7-6,6-3 | |
| ITF M15 - Torello | 03/06 11:40 | 25 | Kane Bonsach Ganley v Steven Diez | 3-6,3-6 | |
| Challenger Tenerife | 02/20 15:45 | 25 | [316] Steven Diez v Franco Agamenone [205] | 5-7,6-3,2-6 | |
| Challenger Tenerife | 02/19 12:00 | 19 | [295] Gastao Elias v Steven Diez [316] | Retired | |
| Challenger Tenerife | 02/18 14:05 | 14 | [472] Imanol L Morillo v Steven Diez [316] | 4-6,3-6 | |
| Challenger Glasgow | 02/15 12:30 | 26 | Nicola Kuhn v Steven Diez | 6-3,6-1 | |
| Challenger Glasgow | 02/13 14:30 | 25 | [419] Yshai Oliel v Steven Diez [316] | 4-6,7-5,6-7 | |
| Challenger Nottingham | 02/04 14:25 | 14 | [318] Steven Diez v Ben Jones [228] | 4-6,4-6 | |
| Challenger Koblenz | 01/28 09:00 | 14 | [487] Kenny de Schepper v Steven Diez [315] | 6-3,6-2 | |
| Challenger Ottignies | 01/22 15:00 | 14 | [315] Steven Diez v Michael Geerts [291] | 3-6,3-6 | |
| Challenger Nonthaburi | 01/09 05:50 | 25 | [396] Hiroki Moriya v Steven Diez [314] | 6-3,6-0 | |
| United Cup | 01/03 06:30 | - | [6] Stefanos Tsitsipas v Steven Diez [314] | 6-2,6-3 | |
| United Cup | 12/31 01:05 | - | [314] Steven Diez v Nicolas Jarry [19] | 5-7,4-6 | |
| Challenger Maspalomas | 11/28 15:00 | 25 | [265] Steven Diez v Raul Brancaccio [190] | 4-6,2-6 | |
| Challenger Valencia | 11/19 11:00 | 14 | [394] Carlos Lopez Montagud v Steven Diez [265] | 6-0,6-2 | |
| Challenger Drummondville | 11/14 23:30 | 25 | [265] Steven Diez v Liam Draxl [297] | 4-6,7-6,1-6 | |
| Challenger Calgary | 11/09 18:45 | 26 | [270] Steven Diez v Aziz Dougaz [242] | 3-6,2-6 | |
| Challenger Calgary | 11/07 18:50 | 25 | [317] Juan Carlos Aguilar v Steven Diez [270] | 3-6,6-1,3-6 | |
| Challenger Shenzhen | 10/19 04:00 | 26 | [436] Yan Bai v Steven Diez [268] | 3-6,6-1,6-4 | |
| Challenger Shenzhen | 10/16 05:10 | 26 | [471] Nam Hoang Ly v Steven Diez [268] | 4-6,1-6 | |
| Challenger Shenzhen | 10/11 04:05 | 25 | [85] Nuno Borges v Steven Diez [269] | 7-5,6-2 | |
| ATP Shanghai | 10/03 08:15 | 15 | [147] Terence Atmane v Steven Diez [268] | 7-6,6-2 | |
| ATP Shanghai | 10/02 10:30 | 14 | [378] Nam Hoang Ly v Steven Diez [268] | 6-2,4-6,3-6 | |
| Challenger Sibiu | 09/18 13:00 | 25 | [259] Steven Diez v Riccardo Bonadio [220] | 2-6,5-7 | |
| Challenger Szczecin | 09/11 09:30 | 19 | [250] Steven Diez v Andrew Paulson [350] | 3-6,1-6 | |
| Challenger Szczecin | 09/10 09:45 | 14 | [252] Steven Diez v Szymon Kielan [301] | 6-1,7-5 |
Wikipedia - Steven Diez
Steven Diez (Spanish: Díez, pronounced [ˈdi.eθ]; born March 17, 1991) is a Canadian and former Spanish professional tennis player. Raised primarily in and competing for Spain early in his career, he has since gone on to represent the country of his birth, Canada, in the Davis Cup. Diez was a member of the Canadian team that won the 2022 ATP Cup.