 He made his debut in a 2–1 defeat away to Eastbourne Borough on 24 January 2009 and was described in "The Press" as looking "off the pace".Mackin played for York in their 13–12 penalty shoot-out victory at home to Kidderminster in the FA Trophy third round on 12 February 2009, which had finished 1–1 after extra time.A tight thigh resulted in him missing a match against Oxford United in April 2009 and he made his return later that month in a 0–0 away draw with Barrow.