Sinclair transformed from a wingman to become a rebounding defender in 2002. In 2003 he had an above average year before ending badly in Round 20 by earning a five match suspension that delayed his start to 2004. His form decreased in 2004, playing only 17 games for 245 possessions. Since 2005 Sinclair has become more consistent, playing over 20 games each season, including every game in 2007 and finishing in the top 10 in the
Syd Barker Medal in 2006. He announced his retirement from
AFL football on 10 September 2008, at the age of 30. After retiring from the AFL, Sinclair played for the
Heidelberg Football Club in the
Northern Football League from 2009 until 2013, and played in the club's 2009 premiership team. He retired from playing at the end of 2013, and will coach St Mary's/Salesian in the
Victorian Amateur Football Association from 2014. ==References==