Simpson played for Geelong in the 2020 AFL Grand Final against Richmond, but was forced from the field in the final with a concussion after colliding with teammate Sam Menegola.[3] He would miss large parts of the 2021 AFL season through injury, returning to the squad late in the season,[4] only to suffer another concussion in the qualifying final against Port Adelaide.[3]
Simpson missed the entire 2022 AFL season due to a number of injuries,[5][6] returning to the Geelong team for the first time in 603 days in round 6 of the 2023 AFL season. He would kick the first goal of his return match against Sydney.[7]
Simpson was delisted by Geelong at the conclusion of the 2023 season.[8]
^The 2020 season was played with 17 home-and-away matches per team (down from 22) and 16-minute quarters with time on (down from 20-minute quarters with time on) due to the impact of the COVID-19 pandemic.
^Barnes, Josh (16 March 2023). "One burning question for every Geelong player ahead of the 2023 season". Geelong Advertiser. Geelong, Victoria: Nationwide News Pty Ltd. After being a quality member of Geelong's grand final side in 2020, Simpson has had two injury-interrupted campaigns. Can he get back to his best and add to his 19 AFL games?
^Forrest, Matthew (24 April 2023). "Oh so Simp-le". Geelong Advertiser. Geelong, Victoria: Nationwide News Pty Ltd. p. 32.
^Nash, Ollie (8 November 2022). "Cats retain Simpson". Herald-Sun. Melbourne, Victoria: Nationwide News Pty Ltd. p. 51.
^Forrest, Matthew (29 April 2023). "Simpson family's 'special moment'". Geelong Advertiser. Geelong, Victoria: Nationwide News Pty Ltd. p. 45.
^"Geelong list update". Geelong Football Club. Archived from the original on 4 September 2023. Retrieved 4 September 2023.