After a strong start to the 2019 season, Ablett was offered a one-match suspension, which would have been the first of his career, after striking Essendon midfielder Dylan Shiel with a forearm to the head in the Cats' round 7 win; the club chose to appeal the suspension at the AFL Tribunal and was ultimately successful, maintaining Ablett's clean record. An almost identical incident occurred the following week involving North Melbourne utility Sam Wright, but Ablett was not penalised. A third incident followed a fortnight later, this time a punch to the jaw of Gold Coast midfielder Anthony Miles; he was again offered a one-match suspension, which the club chose to accept, meaning that Ablett was suspended for the first time in his career after 331 games to that point. After maintaining his good form upon his return, his best game for the year came in a best-on-ground performance round 23 against , when he accumulated 28 disposals and kicked three goals. At the end of the season, Ablett signed a one-year deal with Geelong, extending his AFL career into a nineteenth season, and announced that it would be his last.