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?

full_context: Document 1: Adelaide Football Club: The Adelaide Football Club, nicknamed the Crows, is a professional Australian rules football club that competes in the Australian Football League (AFL). The club is based in Adelaide, South Australia, playing its home matches at Adelaide Oval. The club has its training and administration base at Football Park in West Lakes, where it previously played home matches between 1991 and 2013. The club song is "The Pride of South Australia", to the tune of the Marines' Hymn.
Document 2: Ken McGregor (footballer): Ken McGregor (born 29 January 1981) is a former Australian rules footballer who played for Adelaide in the Australian Football League (AFL). He was drafted at pick 75 in the 1998 AFL Draft. After retiring from professional football he spent some time as a political journalist for the "Adelaide Advertiser" before moving to Canberra. He also played football for Ainslie in the North East Australian Football League (NEAFL). He was the coach of the Port Adelaide in the South Australian National Football League (SANFL) in 2013 and coached fellow SANFL club North Adelaide in 2014 and until his contract was terminated after round 9 of the 2015 season.
Document 3: 2011 Adelaide Football Club season: 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.
Document 4: 2011 Adelaide Thunderbirds season: The 2011 Adelaide Thunderbirds season is the fourth season that the Adelaide Thunderbirds contested the ANZ Championship, and the fifteenth year of their total competitive history. In 2011, the Thunderbirds were coached by Jane Woodlands-Thompson, with veteran international midcourter Natalie von Bertouch returning to captain the Adelaide side. The Thunderbirds also debuted their new team colours in 2011, after announcing a team rebranding in 2010. Despite winning the title in 2010, the Thunderbirds missed out on a finals place in 2011, finishing in sixth place.
Document 5: Angus Brayshaw: Angus Brayshaw (born 9 January 1996) is a professional Australian rules footballer playing for the Melbourne Football Club in the Australian Football League (AFL). A midfielder, 1.87 m tall and weighing 90 kg , Brayshaw is capable of contributing as both an inside and outside midfielder. He has strong family connections in Australian sport whereby his father, Mark Brayshaw, is a former player and the current AFL Coaches' Association Chief Executive Officer, his uncle, James Brayshaw, is a former state cricketer, former North Melbourne chairman and a sport media personality, and his grandfather, Ian Brayshaw, is a former state cricketer and footballer with the Claremont Football Club.
Document 6: Brad Green (footballer): Brad Green (born 13 March 1981) is a former Australian rules football player and current North Melbourne development coach. He played for 13 seasons with Melbourne Football Club in the Australian Football League (AFL). Drafted with the 19th selection in the 1999 AFL Draft, Green played in a losing Grand Final in his first season. In 2010 he won the club's best and fairest award and was the club's leading goalkicker, with many commentators stating he was unlucky to miss out on All-Australian selection. Green was named Melbourne's captain for the next season, but the appointment was short-lived as he held the position for only one year. He also represented the Australian International rules football team in 2004, 2010 and 2011, captaining the side in 2011.
Document 7: Australian cricket team in Sri Lanka in 2011: The Australian cricket team toured Sri Lanka from 6 August to 20 September 2011. The tour consisted of two Twenty20 Internationals (T20Is), five One Day Internationals (ODIs) and three Tests played for Warne-Muralidaran Trophy. Four uncapped players had been named in the Australian Test squad; Shaun Marsh, Trent Copeland, James Pattinson and Nathan Lyon. Lyon had only made four first-class appearances and was previously one of the groundstaff at the Adelaide Oval.
Document 8: Mark Bickley: 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.
Document 9: Brad Crouch: Bradley "Brad" Crouch (born 14 January 1994) is a professional Australian rules footballer playing for the Adelaide Football Club in the Australian Football League (AFL). He was recruited by the Adelaide Football Club with the second selection in the 2011 mini-draft. He is the older brother and teammate of Matt Crouch.
Document 10: Garry Lyon: Garry Peter Lyon (born 13 September 1967) is a former professional Australian rules football player and was captain of the Melbourne Football Club in the Australian Football League (AFL). Since his retirement from football, he has been mainly an Australian rules football media personality, featuring on television, radio and in newspapers. He has also coached during the International Rules Series.
Document 11: Darren Crocker: Darren Crocker (born 26 March 1967) is a former Australian rules footballer and former player of the North Melbourne Football Club in the Australian Football League (AFL). On 16 June 2009, he was appointed caretaker coach of the North Melbourne Football Club after the resignation of Dean Laidley. On 17 August 2009 the North Melbourne Football Club appointed Brad Scott as their senior coach, thus Crocker was not retained as North Melbourne coach for the 2010 season. However, he remained as assistant coach at North Melbourne Football Club. In 2015, Crocker again served as acting coach when Scott underwent back surgery, and again for one match in 2016 when Scott was ill.
Document 12: Craig Bellamy (rugby league): Craig Bellamy (born 3 October 1959) is an Australian professional rugby league football coach and former player. He is the current head coach of the NRL's Melbourne Storm club and previously coached the New South Wales State of Origin team. Bellamy started his coaching career as assistant coach to Wayne Bennett at the Brisbane Broncos. He also writes a column for "The Australian".
Document 13: 2010 Adelaide Football Club season: The 2010 AFL season was the Adelaide Crows 20th season in the AFL on the back of a 5th place and a semi-final exit in the 2009 AFL season. It was Neil Craig's 7th season at the helm after taking over from Gary Ayres as coach in 2004. The captain for this season was Simon Goodwin and the leadership group consisted of Brad Symes, Scott Stevens, Nathan van Berlo, Ben Rutten, Michael Doughty, Brett Burton and Tyson Edwards.
Document 14: Eddie McGuire: Edward Joseph McGuire AM (born 29 October 1964) is an Australian radio and television presenter, commentator, journalist, media businessman and sporting president known for his long association with Australian rules football (AFL) and Channel Nine, with company McGuire Media
Document 15: 2011 St Helens RLFC season: St Helens ended 2010 with yet another Grand Final defeat, their fourth in a row, to bitter rivals Wigan. It was evident that the personnel at the club, combined with the suitability of Mick Potter's position had become surplus to requirements at St Helens, and widespread changes took place. Potter announced mid-2010 that he would be leaving for Bradford Bulls, his replacement, Royce Simmons; someone who had worked under Tim Sheens for many years at Wests Tigers and with the Australian national side. The very fact that St Helens had been, in many fans' eyes 'reduced' to looking for assistant coaches in the NRL drew a little bit of criticism, but overall, the feeling was positive over Simmons' appointment. The coach would not be the only change either. Club legend Keiron Cunningham retired from playing at the age of 33, after 16 years of paying first team rugby for St Helens, with centre Matt Gidley doing likewise, and returning to Australia. A number of others were to leave too; a combination of age and not being good enough for squad selection under Simmons costing the St Helens careers of 12 of the 2010 squad, most notably, arguably, Maurie Fa'asavalu, who switched codes with Harlequins. The influx was far fewer than the outgoing numbers during the transfer period, with only three names coming into the squad for 2011 from other clubs; these being prop Josh Perry, England centre Michael Shenton, and fellow England cap and prop Louie McCarthy-Scarsbrook, from Manly-Warringah Sea Eagles, Castleford Tigers and respectively. There were also four new faces in the first team by means of the reserve and academy system at St Helens. Pre-season fixtures announced included a game against Huddersfield Giants at the Halton Stadium on 29 January and the Karalius Cup game against Widnes, again at the Stobart, on the 23rd.
ground_truth: Mark Bickley