Stadium: Stadium Round: 25 Ground: Hardcourt outdoor
| French Open | 2021/05/25 15:55 | Denis Kudla v Mikael Torpegaard | 6-1,6-2 |
| Challenger Oeiras | 2021/05/17 09:30 | Mikael Torpegaard v Alex Molcan | 6-7,4-6 |
| Challenger Oeiras | 2021/05/16 10:00 | Mikael Torpegaard v Luis Faria | 1-6,6-4,6-3 |
| Challenger Heilbronn | 2021/05/09 10:00 | Mikael Torpegaard v Ergi Kirkin | 4-6,1-6 |
| Challenger Tallahassee | 2021/04/23 16:00 | Mikael Torpegaard v Facundo Mena | 1-6,6-7 |
| Challenger Tallahassee | 2021/04/21 20:00 | Pedro Sakamoto v Mikael Torpegaard | 0-6,6-3,1-6 |
| Challenger Tallahassee | 2021/04/19 18:35 | Mikael Torpegaard v Thomaz Bellucci | 7-6,7-5 |
| Challenger Orlando | 2021/04/13 14:00 | Mikael Torpegaard v Roberto Cid Subervi | 6-7,3-6 |
| French Open | 2021/05/25 15:20 | Carlos Alcaraz Garfia v Lukas Lacko | 6-3,6-3 |
| Challenger Prague | 2021/05/02 12:00 | Tomas Martin Etcheverry v Lukas Lacko | 6-1,6-3 |
| Challenger Ostrava | 2021/04/27 08:00 | Denis Istomin v Lukas Lacko | 0-6,6-1,6-4 |
| Challenger Lugano | 2021/03/24 09:30 | Lucas Miedler v Lukas Lacko | 7-6,6-4 |
| ATP Dubai | 2021/03/13 08:30 | Radu Albot v Lukas Lacko | 3-6,6-4,6-4 |
| ATP Doha | 2021/03/07 12:30 | Lloyd Harris v Lukas Lacko | 6-4,6-3 |
| ATP Doha | 2021/03/06 09:00 | Mousa Shanan Zayed v Lukas Lacko | 1-6,1-6 |
| ATP Montpellier | 2021/02/22 09:30 | Lukas Lacko v Peter Gojowczyk | 2-6,1-6 |