Sloane was drafted to Adelaide in 2008 from TAC Cup side, Eastern Ranges, winning his first Club Champion award in 2013. His second Club Champion Award, in 2016, came in a dominant year where he was also named All-Australian vice-captain, AFLPA MVP runner-up, AFLCA Player of the Year runner-up, and finished fourth in the Brownlow with 24 votes. The accolades continued to come for the selfless player in 2017, when he was voted AFLPA Most Courageous Player and received an All Australian nomination. Sloane had an injury-interrupted 2018 but gave fans plenty to cheer about when he signed a new five-year deal until 2023. In 2019, Sloane was appointed co-captain alongside Taylor Walker and produced an impressive campaign on the way to a second-place finish in the best and fairest. Off field, Sloane and wife Belinda welcomed baby boy Sonny Leo on September 16. When Walker stepped down from his co-captaincy it was announced Sloane would take sole leadership into 2020.