Leuenberger represented Western Australia in the 2006 AFL Under 18 Championships and was rewarded with All-Australian selection as the ruckman.

[11] He was named best-on-ground in the sixth QClash against Gold Coast and was awarded the Marcus Ashcroft Medal, after 20 disposals, 7 tackles, and 29-hitouts.

[12] Leuenberger played the first four games of the 2014 season before succumbing to another long-term injury, where he tore his meniscus and would miss at least three months.

[16] At seasons end, he decided to leave Brisbane through free agency and nominated Essendon as his club of choice.

[18] After playing 29 games for Essendon and 108 for the Brisbane Lions Leuenberger announced his immediate AFL retirement despite being offered a new contract for 2019.