On 3 January 2010 Ankergen made several important saves for Leeds in their 1–0 FA Cup victory against Premier League champions Manchester United at Old Trafford, particularly from Wayne Rooney and Danny Welbeck shots. The following matches for Leeds saw a slump in form with Leeds drawing against Wycombe Wanderers and losing against Exeter City and Carlisle United. Ankergren had a fine match for Leeds in the FA Cup match against Tottenham Hotspur on 23 January 2010. Ankergen saved a first half penalty from Jermain Defoe, and also pulled off a string of fine saves as Leeds earned a replay with a 2–2 draw.