A dent to the goal difference, the confidence and, more importantly, the win ratio.
A bad day on the south coast of England saw Aston Villa embarrassed by Southampton as they shipped six goals.
Sherwood's men have put together a terrific run of form and looked all but safe as they headed for the final two league games but a 6-1 defeat at the hands of Ronald Koeman has been sobering for the FA Cup finalists.
Villa have just two games left now in their season - one in the league at home to Burnley to secure safety and a trip to Wembley to take on Arsenal for honours but, judging from their performance this afternoon, they have an awful lot of work to do.
But, whilst Tim Sherwood was far from happy at what went down at St. Mary's, the manager was cleverly upbeat rather than coming out and launching a tirade at his players at such a tender time.
As he puts it, he's seen a bad 45 minutes from Villa since he has come in.
https://www.youtube.com/watch?v=4P0JuyfHXew
