Paul John Patterson (born 28 September 1965) is a former professional Australian rules footballer who played for the Adelaide Football Club in the Australian Football League (AFL), and for the West Adelaide Football Club in the South Australian National Football League (SANFL).
Bruce Abernethy (born 10 May 1962) is a former professional Australian rules footballer who played for the North Melbourne Football Club and Adelaide Football Club in the Victorian/Australian Football League (VFL/AFL), and the Port Adelaide Football Club in the South Australian National Football League (SANFL) and is a media personality.
Scott Lyall Hodges (born 26 April 1968) is a former professional Australian rules footballer who played for the Adelaide Football Club in the Australian Football League (AFL) and the Port Adelaide Football Club in the South Australian National Football League (SANFL).
 Hodges kicked 684 goals in his 183-game SANFL career and added 100 goals in 38 games with Adelaide, as well as 7 goals in 2 games representing South Australia in State of Origin football.
Mark Alan Bickley (born 4 August 1969)is a former professional Australian rules footballer who played for the Adelaide Football Club in the Australian Football League (AFL).
 Bickley was a player for the Crows from 1991 until 2003, captaining the team to both the 1997 and 1998 AFL premierships.
 He was a media commentator, most notably with Channel 9 in Adelaide as their sports presenter.
 In 2011 he had a brief coaching career as caretaker coach of the Crows after the retirement of Neil Craig.
Chris McDermott (born 4 November 1963) is a former professional Australian rules footballer who played for the Adelaide Football Club in the Australian Football League (AFL) and the Glenelg Football Club and North Adelaide Football Club in the South Australian National Football League (SANFL).
The 2011 AFL season was the Adelaide Crows 21st season in the AFL.
 Neil Craig was appointed coach, but was replaced by Mark Bickley after round 18.
Ashley Fernee (born 24 June 1977) is a former Australian rules footballer who played in the Australian Football League (AFL).
 He was selected for the Adelaide Football Club in the 1995 draft, having previously played with the Calder Cannons.
 Fernee only played two games for the Adelaide Football Club in 1996, debuting against Fitzroy Football Club in round 17.
 In spite of those two games, he was not selected to play in 1997, and in 1998 things were not looking promising, with Michelangelo Rucci stating that the "wait will go on unless a long injury list strikes again".
 Fernee did not play in 1998, and he was delisted by the Adelaide Football Club in October of that year.
 He played for the SANFL team, South Adelaide Football Club, in 1999, and nominated for the AFL draft at the end of the season.
 Unsuccessful, Fernee left Adelaide to return to Victoria, where he played for the East Keilor Football Club.
Tony Armstrong (born 29 September 1989) is a former professional Australian rules footballer who played for the Adelaide Football Club, Sydney Swans and Collingwood Football Club in the Australian Football League (AFL).
 Originally from Burrumbuttock, New South Wales, he was initially interested in rugby league, but turned to Australian rules football, supporting the Sydney Swans.
 Armstrong was drafted by Adelaide in the 2007 AFL Draft at pick number 58.
Andrew Newton Jarman (born 14 January 1966) is a former professional Australian rules footballer who played for the Adelaide Football Club in the Australian Football League (AFL), and the North Adelaide Football Club and Norwood Football Club in the South Australian National Football League (SANFL).
 He is the older brother of Adelaide legend Darren Jarman and has won the Magarey Medal twice.
Clayton Andrew Lamb (born 1 July 1964)is a former professional Australian rules footballer who played for the Adelaide Football Club in the Australian Football League (AFL), and the West Adelaide Football Club and Glenelg Football Club in the South Australian National Football League (SANFL).

Question: What former professional Australian rules footballer who played for the Adelaide Football Club in the Australian Football League (AFL), replaced coach Neil Craig after round 18 of their 21st season?
Answer: Mark Bickley