The 2017–18 FC Basel season was the 125th season in club history and the club's 23rd consecutive season in the top flight of Swiss football. Basel were the reigning Swiss Super League champions. The season started on the weekend of 22–23 July 2017 and ended on 19 May 2018. They were also the Swiss Cup holders. The first round of the Swiss Cup was played on 13 August 2017. Basel were also qualified for this season's Champions League in the Group stage. The first round was played on 12 September 2017.
The 2018–19 FC Basel season is the 126th season in club history and the club's 24th consecutive season in the top flight of Swiss football. Basel were runners-up in the previous season. The season started on the weekend of 21–22 July 2018 and will end on Saturday 25 May 2019. The first round of the Swiss Cup was played on the week-end 29, 30 June and 1 July. Basel played the first round on Friday 29 June against lower classed FC Montlingen and they were victorious. Therefore Basel continued in the competition in the second round against FC Echallens.
The 2021–22 Grasshopper Club Zurich season is the club's first season back in the Swiss Super League, after winning promotion from the Swiss Challenge League. The season started on July 24, 2021. Grasshoppers also participated in the Swiss Cup, losing in the second round.
The 2021–22 Swiss Super League was the 125th season of top-tier competitive football in Switzerland and the 19th under its current name and format.
The 2022–23 season was FC Basel's 129th season in their existence and the club's 28th consecutive season in the top flight of Swiss football since their promotion in the 1993–94 season.