| Olympic Games 2020 Tokyo | 400m (Men) | 45.36 | 7 | SLO | 2021-08-02 00:00:00 | SF1 | | SB |
| Olympic Games 2020 Tokyo | 400m (Men) | 45.44 | 5 | SLO | 2021-08-01 00:00:00 | H3 | | SB |
| Diamond League 2020 Rome | 400m (Men) | 45.78 | 6 | SLO | 2020-09-17 00:00:00 | FINAL | | SB |
| Palio Città della Quercia 2020 | 400m (Men) | 46.16 | 2 | SLO | 2020-09-08 00:00:00 | FINAL | | |
| Diamond League 2020 Stockholm | 400m (Men) | 45.85 | 2 | SLO | 2020-08-23 00:00:00 | FINAL | | =SB |
| Gyulai István Memorial 2020 | 400m (Men) | 46.16 | 3 | SLO | 2020-08-19 00:00:00 | FINAL | | |
| World Championship 2019 Doha | 400m (Men) | 46.84 | 6 | SLO | 2019-10-01 00:00:00 | H2 | | |
| Diamond League 2019 London | 400m (Men) | 45.49 | 7 | SLO | 2019-07-21 00:00:00 | FINAL | | SB |
| Diamond League 2019 Monaco | 400m (Men) | 45.76 | 4 | SLO | 2019-07-12 00:00:00 | FINAL | | SB |
| Diamond League 2019 Stockholm | 400m (Men) | 46.60 | 5 | SLO | 2019-05-30 00:00:00 | FINAL | | |
| European Championship 2018 Berlin | 400m (Men) | 45.43 | 5 | SLO | 2018-08-10 00:00:00 | FINAL | | |
| European Championship 2018 Berlin | 400m (Men) | 44.93 | 2 | SLO | 2018-08-08 00:00:00 | SF3 | | SB |
| World Championship 2017 London | 400m (Men) | 46.06 | 6 | SLO | 2017-08-05 00:00:00 | Heat2 | 1107 | |
| Diamond League 2017 Monaco | 400m (Men) | 44.84 | 6 | SLO | 2017-07-21 00:00:00 | FINAL | 1191 | NR |
| Diamond League 2017 Stockholm | 400m (Men) | 45.56 | 4 | SLO | 2017-06-18 00:00:00 | FINAL | 1141 | |
| Olympic Games 2016 Rio | 400m (Men) | 45.33 | 2 | SLO | 2016-08-13 00:00:00 | Round1 Heat4 | 1157 | |
| Diamond League 2016 London | 400m (Men) | 45.54 | 4 | SLO | 2016-07-22 00:00:00 | FINAL | 1143 | |
| World Championship 2015 Beijing | 400m (Men) | 45.28 | 28 | SLO | 2015-08-23 00:00:00 | Round 1 | 1160 | NR |