Career
Born in Sydney, Offereins" family moved to Perth in 1987. He has been running from a young age, starting out in little athletics and has progressed through to the senior ranks. He participated in the individual 400m as well as the 4 × 400 m relay.
The next few seasons saw Offereins plagued by injuries until June 2009 when he set a new personal best for the 400m of 45.69s, a World Championships B qualifier, which earned him the final position on the Australian 4 × 400 m relay team for Berlin 2009.
In 2010 Offereins started his season by winning the Australia Cup held in Canberra in a new PB of 45.32 sec, he then broke his PB again at the Sydney Track Classic running 44.86sec and becoming only the eighth Australian to break the 45.00 sec barrier and the seventh fastest Australian of all time. He continued his form, winning the IAAF Melbourne Track Classic in 45.73sec, and then the Australian National Championships in 45.17 secretary
This gained him automatic selection for the individual 400m and the 4x400 relay at the 2010 in Delhi, India. At the Athletics Australia annual end of season awards night he was named the Male athlete of the year for the 2010 Australian Domestic season.
He represented Australia at the 2012 Summer Olympics, as part of the men"s 4 x 400 metre relay team