| Year Competition Venue Position Event Notes | |
| Representing Australia Representing Australia Representing Australia Representing Australia Representing Australia Representing Australia | |
| 2003 World Youth Championships Sherbrooke, Canada 5th 200 m 24.01 | |
| 2003 World Youth Championships Sherbrooke, Canada 1st 100 m hurdles (76.2 cm) 13.42 | |
| 2003 World Championships Paris, France 14th (heats) 4 × 100 m relay 44.11 | |
| 2004 World Junior Championships Grosseto, Italy 3rd 100m 11.40 (wind: +1.5 m/s) | |
| 2004 World Junior Championships Grosseto, Italy 4th 100m hurdles 13.41 (wind: -1.0 m/s) | |
| 2004 World Junior Championships Grosseto, Italy 5th 4 × 100 m relay 45.10 | |
| 2006 Commonwealth Games Melbourne, Australia 7th 100 m 11.50 | |
| 2006 Commonwealth Games Melbourne, Australia 3rd 4 × 100 m relay 44.25 | |
| 2006 World Cup Athens, Greece 8th 100 m 11.44 | |
| 2006 World Cup Athens, Greece 4th 100 m hurdles 12.95 | |
| 2006 World Cup Athens, Greece 5th 4 × 100 m relay 44.26 | |
| 2007 World Championships Osaka, Japan 15th (semis) 100 m 11.32 | |
| 2007 World Championships Osaka, Japan 10th (semis) 100 m hurdles 12.82 | |
| 2007 World Championships Osaka, Japan 14th (heats) 4 × 100 m relay 43.91 | |
| 2008 Olympic Games Beijing, China 2nd 100 m hurdles 12.64 | |
| 2009 World Championships Berlin, Germany 5th 100 m hurdles 12.70 | |
| 2010 IAAF Continental Cup Split, Croatia 1st 100 m hurdles 12.65 | |
| 2010 Commonwealth Games New Delhi, India DQ 100 m - | |
| 2010 Commonwealth Games New Delhi, India 1st 100 m hurdles 12.67 | |
| 2010 Commonwealth Games New Delhi, India 4th 4 × 400 m relay 3:30.29 | |
| 2011 World Championships Daegu, South Korea 1st 100 m hurdles 12.28 | |
| 2011 World Championships Daegu, South Korea 10th (heats) 4 × 100 m relay 43.79 | |
| 2012 World Indoor Championships Istanbul, Turkey 1st 60 m hurdles 7.73 | |
| 2012 Olympic Games London, United Kingdom 1st 100 m hurdles 12.35 | |
| 2013 World Championships Moscow, Russia 2nd 100 m hurdles 12.50 | |
| 2014 World Indoor Championships Sopot, Poland 2nd 60 m hurdles 7.85 | |
| 2014 Commonwealth Games Glasgow, Scotland 1st 100 m hurdles 12.67 | |
| 2017 World Championships London, England 1st 100 m hurdles 12.59 | |
| 2018 World Indoor Championships Birmingham, England 9th (semis) 60 m hurdles 7.92 | |