[5] Rayner was selected in the AFL Academy in 2017 and despite splitting his toe open was dominant with a three goal performance for Team Daniher in the 20th Anniversary match at the Melbourne Cricket Ground.

[7] Rayner made his debut in the twenty-five point loss to St Kilda at Etihad Stadium in the opening round of the 2018 season, recording 8 disposals including his first AFL goal.

[9] In the following round in the QClash against Gold Coast, Rayner had a chance to draw the match right on the full-time siren, but he pulled his kick wide to the left for a behind and the Lions were defeated by 5 points.

Rayner received the AFL Rising Star nomination for round 15 after kicking two goals and recording nineteen disposals in the Lions' win over Fremantle at Optus Stadium.

[12] Rayner was part of the Brisbane Lions 2024 premiership winning team, kicking a goal and having 16 disposals in a 60 point victory over the Sydney Swans.