During the 2009–10 season, AFC Ajax participated in the Eredivisie, the KNVB Cup and the UEFA Europa League. The first training took place on 22 June 2009. The traditional AFC Ajax Open Day was on Wednesday 29 July.
The first training for the 2009–10 season was held on 22 June 2009. In preparation for the new season, Ajax organized a training camp in Amsterdam at the De Toekomst Sportpark. During the pre-season, the squad from manager Martin Jol played friendly matches against Ajax Cape Town, DWV, WKE and SV Huizen before traveling to England to play one against Bristol City and play Southampton for the Ted Bates Trophy. They then returned to Amsterdam to play Atlético Madrid and Benfica in the annual Amsterdam Tournament.