The tension between West Lakes and Alberton deepened on Tuesday as the Crows confirmed they had poached Power assistant Walsh, as replacement for the sacked Brenton Sanderson.
Walsh returned to the Power in September 2013 as midfield manager after spending five seasons at West Coast in the role of strategy and innovations coach.
He had previously worked for Port Adelaide as an assistant coach from 1999 to 2008.
This list relates only to those who directly leave one of the SA-based clubs for the other.
IAN DOWNSBOROUGH
The West Aussie started out at West Coast, before playing seven games for Port Adelaide in 1997 after being claimed with the four wildcard recruiting hits allowed for the Power on its AFL rivals.
He was traded at the end of the season and played 12 games in two years at Adelaide.
BRETT CHALMERS
The SANFL ruckman was drafted by Collingwood in 1992. But Chalmers was traded to Adelaide where he played 50 games from 1994-97.
Controversially, he then returned to his SANFL club Port Adelaide and played 25 AFL games for the Power from 1998-99.
SCOTT HODGES
The champion goal kicker and Magarey Medalist booted a SANFL record 153 goals for Port Magpies in 1990. He then played 38 AFL games as an inaugural Crow.
But his heart was always with Port, and he crossed to the Power for their first year in the AFL in 1997, although he didn't manage a game in the teal, black and white.
MATTHEW BODE
The Glenelg crumber was drafted by the Power in their early days, and played 29 games from 1998-2000.
He moved to Adelaide in 2001 and played 79 games in eight seasons as a Crow. He remains at West Lakes on the Crows’ fitness staff.
BRAD SYMES
The Central Districs product is perhaps the most succesful SA club hopper. Symes stagnated under Mark Williams at Port from 2004-2007. But enjoyed better success at Adelaide, where he managed 60 matches between 2008-2012.