Fievez first made state selection for Western Australia in the 1995 youth eight contesting the Noel Wilkinson Trophy at the Australian Rowing Championships.

[3] Fievez made his Australian representative debut aged seventeen as a sculler selected to race in an U23 quad scull at the 1995 World Rowing U23 Championships in Groningen.

Racing in the final with Timothy Perkins, they were fifth at the 500m mark, took the lead by the 1000m and held off a fast finish from the Yugoslavs to win by 0.18 secs and take the gold.

[5] In 1999 Fievez was selected in the Australian senior squad and with Matthew O'Callaghan, he raced a double scull at the 1999 World Rowing Championships in St Catharines Canada.

He was in a North Cottesloe Beach SLSC boat with David Porzig (another Australian representative stillwater rower) which won the open men's surfboat category at the World Surflifesaving Championships in Victoria in 2006.