 Vlaar continued to be in the first team until he suffered a calf injury, which he suffered during a match against Southampton on 4 December 2013.After missing five matches, Vlaar made his first team return, in a 1-0 win over Sunderland, where he played 70 minutes.After returning to the first team for five match, Vlaar then suffered a hamstring injury, which he suffered during a match against Everton.