| Diamond League 2023 Doha | 400m Hurdles (Men) 0.914m | 49.88 | 7 | IRL | 2023-05-05 00:00:00 | FINAL | | |
| World Championship 2022 Oregon | 400m Hurdles (Men) 0.914m | 50.08 | 5 | IRL | 2022-07-17 00:00:00 | SF1 | | |
| World Championship 2022 Oregon | 400m Hurdles (Men) 0.914m | 49.15 | 2 | IRL | 2022-07-16 00:00:00 | H4 | | SB |
| Diamond League 2022 Doha | 400m Hurdles (Men) 0.914m | 49.67 | 3 | IRL | 2022-05-13 00:00:00 | FINAL | | SB |
| Olympic Games 2020 Tokyo | 400m Hurdles (Men) 0.914m | 48.26 | 4 | IRL | 2021-08-01 00:00:00 | SF1 | | SB |
| Olympic Games 2020 Tokyo | 400m Hurdles (Men) 0.914m | 49.02 | 2 | IRL | 2021-07-30 00:00:00 | H3 | | |
| Gala dei Castelli 2020 | 400m Hurdles (Men) 0.914m | 50.00 | 3 | IRL | 2020-09-15 00:00:00 | FINAL1 | | |
| ISTAF Berlin 2020 | 400m Hurdles (Men) 0.914m | 50.41 | 4 | IRL | 2020-09-13 00:00:00 | FINAL | | |
| P-T-S Meeting 2020 | 400m Hurdles (Men) 0.914m | 50.30 | 3 | IRL | 2020-09-11 00:00:00 | FINAL | | |
| World Championship 2019 Doha | 400m Hurdles (Men) 0.914m | 49.02 | 4 | IRL | 2019-09-28 00:00:00 | SF3 | | SB |
| World Championship 2019 Doha | 400m Hurdles (Men) 0.914m | 49.41 | 2 | IRL | 2019-09-27 00:00:00 | H1 | | |
| Diamond League 2019 Zurich | 400m Hurdles (Men) 0.914m | 49.17 | 6 | IRL | 2019-08-29 00:00:00 | FINAL | | |
| Diamond League 2019 Paris | 400m Hurdles (Men) 0.914m | 49.32 | 7 | IRL | 2019-08-24 00:00:00 | FINAL | | |
| Diamond League 2019 Birmingham | 400m Hurdles (Men) 0.914m | 50.16 | 5 | IRL | 2019-08-18 00:00:00 | FINAL | | |
| Diamond League 2019 Oslo | 400m Hurdles (Men) 0.914m | 49.11 | 2 | IRL | 2019-06-13 00:00:00 | FINAL | | SB |
| Diamond League 2019 Rome | 400m Hurdles (Men) 0.914m | 49.65 | 4 | IRL | 2019-06-06 00:00:00 | FINAL | | |
| Diamond League 2019 Stockholm | 400m Hurdles (Men) 0.914m | 50.28 | 3 | IRL | 2019-05-30 00:00:00 | FINAL | | |
| Diamond League 2019 Shanghai | 400m Hurdles (Men) 0.914m | 49.41 | 3 | IRL | 2019-05-18 00:00:00 | FINAL | | SB |
| European Championship 2018 Berlin | 400m Hurdles (Men) 0.914m | 48.31 | 3 | IRL | 2018-08-09 00:00:00 | FINAL | | SB |
| European Championship 2018 Berlin | 400m Hurdles (Men) 0.914m | 49.10 | 2 | IRL | 2018-08-07 00:00:00 | SF3 | | |
| Diamond League 2018 London | 400m Hurdles (Men) 0.914m | 48.99 | 3 | IRL | 2018-07-21 00:00:00 | FINAL | 1181 | SB |
| Diamond League 2018 Oslo | 400m Hurdles (Men) 0.914m | 49.53 | 8 | IRL | 2018-06-07 00:00:00 | FINAL | 1153 | SB |
| World Championship 2017 London | 400m Hurdles (Men) 0.914m | DNS | | IRL | 2017-08-07 00:00:00 | SF1 | 0 | |
| World Championship 2017 London | 400m Hurdles (Men) 0.914m | 49.79 | 4 | IRL | 2017-08-06 00:00:00 | Heat2 | 1140 | |
| Diamond League 2017 Oslo | 400m Hurdles (Men) 0.914m | 48.95 | 3 | IRL | 2017-06-15 00:00:00 | FINAL | 1183 | SB |
| Diamond League 2016 Zurich | 400m Hurdles (Men) 0.914m | 49.34 | 6 | IRL | 2016-09-01 00:00:00 | FINAL | 1163 | |
| Olympic Games 2016 Rio | 400m Hurdles (Men) 0.914m | 47.97 | 4 | IRL | 2016-08-18 00:00:00 | FINAL | 1233 | NR |
| Olympic Games 2016 Rio | 400m Hurdles (Men) 0.914m | 48.39 | 1 | IRL | 2016-08-16 00:00:00 | SemiFinal 3 | 1211 | NR |
| Olympic Games 2016 Rio | 400m Hurdles (Men) 0.914m | 48.93 | 2 | IRL | 2016-08-15 00:00:00 | Round1 Heat4 | 1184 | SB |
| World Championship 2015 Beijing | 400m Hurdles (Men) 0.914m | 48.71 | 11 | IRL | 2015-08-23 00:00:00 | Semi Final | 1195 | |
| World Championship 2015 Beijing | 400m Hurdles (Men) 0.914m | 49.20 | 18 | IRL | 2015-08-22 00:00:00 | Round 1 | 1170 | |