[2] Sedgman competed at the 2010 Commonwealth Games, where she earned a gold medal[2][3][4][5][8][9][7] as a sixteen-year-old[4][5] in the women's 50m rifle three position event.

[7] Sedgman finished 2nd in the three position and 4th in the prone 10 metres air rifle at the 2011 Oceania Championships in Sydney, Australia.

[2] Sedgman was selected to represent Australia at the 2012 Summer Olympics in shooting in the 10 metres air rifle event.

[2][3][8] Australia had one final quota place to give to a shooter for the Olympics and it came down a choice between Gulvin and Sedgman.

Sedgman was selected ahead of her boyfriend as Australian International Shooting opted to send a female competitor.