Senior career In 2009, both Justin and Ryan signed a contract with Speedway Ekstraliga team Unia Leszno, but they did not start in the league.
Australia withdrew from the Final in Balakovo, Russia due to travel cost and visa problems, along with Sweden and Great Britain.
[10] Sedgmen finished a to date career best third place in the four round 2015 Australian Championship behind runaway winner Jason Doyle and runner-up Sam Masters.
Later in 2015, Sedgmen and Max Fricke were named as the two reserve riders for the 2015 Speedway Grand Prix of Australia which was held at the Etihad Stadium in Melbourne, although neither got to race on the night.
[11] A fortnight later Sedgmen raced in the Darcy Ward Tribute Meeting at Gillman in Adelaide to raise money for the injured Australian rider.
[12] He was part of the Edinburgh team that won the Premier League Four-Team Championship final, which was held on 1 October 2015, at the Media Prime Arena.
[13] In November 2015, Sedgmen rejoined Swindon Robins for the 2016 Elite League season, and signed to ride for Grindsted in Denmark.