 After being out a few months with a back injury, Boerrigter made an impact in his second game as he scored two in a 3–1 victory over De Graafschap.Having made 17 appearances for Ajax in the 2011–12 season, Boerrigter scored seven league goals to help his side secure their 31st Eredivisie title.On 14 April 2013, coming on as a substitute for Christian Poulsen in the 75th minute, Boerrigter scored the match winning goal against rivals PSV Eindhoven in the 77th minute off a long assist from his teammate Christian Eriksen, in which he challenged PSV's defender Erik Pieters and then shot the ball past goalkeeper Boy Waterman, only two minutes after having been brought on.