Barrass fell awkwardly after a marking contest and was dazed for roughly a minute, but returned later in the week on a lighter program. After missing round 1, he played the next eight rounds of the season before being demoted to the WAFL after a poor performance against . Barrass returned against in round 13 and played the remaining games of the season, including the elimination and semi-finals. Barrass played on Sydney forward Lance Franklin in round 1 of the 2018 AFL season and conceded three goals in the opening term. West Coast captain Shannon Hurn was confident Barrass was not shaken by the experience. In June, during West Coast's round 12 bye, Barrass injured his back while using a dustpan and missed the next six rounds. He returned for West Coast's finals campaign and played on Mason Cox in the qualifying final. Cox did not score and was restricted to four kicks and two marks. In the grand final, Barrass again played on Cox; the match-up was named one of three key match-ups for the grand final by Terry Wallace prior to the game. Barrass outplayed Cox to half-time, restricting him to just one possession. However, Cox improved in the second half and finished with seven marks and two goals, while Barrass recorded ten marks and 17 disposals. Barrass signed a contract extension until the end of 2022 after the grand final. He was ranked as 'elite' (in the top ten percent of defenders) by Champion Data ahead of the 2019 AFL season. Barrass kicked the first goal of his AFL career in the first round of the 2022 season, his 100th game. Statistics Correct to the end of the 2018 AFL season. |- ! scope="row" style="text-align:center" | 2015 |style="text-align:center;"| | 37 || 3 || 0 || 0 || 22 || 15 || 37 || 17 || 2 || 0 || 0 || 7.3 || 5.0 || 12.3 || 5.7 || 0.7 |- |-style="background-color: #EAEAEA" ! scope="row" style="text-align:center" | 2016 |style="text-align:center;"| | 37 || 10 || 0 || 0 || 69 || 46 || 115 || 49 || 13 || 0 || 0 || 6.9 || 4.6 || 11.5 || 4.9 || 1.3 |- ! scope="row" style="text-align:center" | 2017 |style="text-align:center;"| | 37 || 19 || 0 || 1 || 164 || 91 || 255 || 121 || 21 || 0 || 0.1 || 8.6 || 4.8 || 13.4 ||