Between 1997 and 2006, during the Commonwealth Bank Trophy era, she played for Sydney Sandpipers, Melbourne Phoenix, Adelaide Thunderbirds and AIS Canberra Darters.

Between 2004 and 2007, Avellino also played for Southern Sting in Netball New Zealand's National Bank Cup league.

[3][4] Avellino represented New South Wales in the Australian National Netball Championships at under-19, under-21 and Open levels.

In 1993, a Garville team featuring Avellino, Jenny Borlase and Michelle den Dekker and coached by Patricia Mickan, defeated Sydney Electricity and finished as premiers.

She played most notably for Sydney Sandpipers and Adelaide Thunderbirds, but also had spells with Melbourne Phoenix and AIS Canberra Darters.

[2][3][4][5][14][15] Between 1997 and 2002, Avellino made 71 senior appearances for Sydney Sandpipers in the Commonwealth Bank Trophy league.

After spending the 1999 season with Melbourne Phoenix, Avellino returned to Sandpipers in 2000 and helped them achieve their best performance in the league .

[1][14][16][17][18][19][20][21] Ahead of the 2003 season, Avellino was dropped from the Sandpipers squad due to an osteitis pubis injury.

However, after Tania Dalton suffered a season ending injury, Avellino became a prominent member of Sting team that won the league title in 2004.

In October 2004 she returned to international netball and was subsequently a member of the Australia team that gained the silver medal at the 2006 Commonwealth Games.

[2][6][39][40][41][42] While playing for Southern Sting, Avellino started working as a sports co-ordinator and netball coach at Southland Girls' High School.

[59][60] Between 2008 and 2010, Avellino coached the Southland netball team that competed in the National Provincial Championships.

She was also Waimarama Taumaunu's assistant coach when New Zealand team that won the 2012 Fast5 Netball World Series.