Drop Down Menu / Strikethrough Query

Apologies if this sort of thing has already been asked, but I had a quick flick through parts of the forum and it doesn't appear to have been in this particular way.

I've attached the sheet in question. The sheet is a Premier League football table prediction competition, in which contestants will use the drop down menus to select teams in the order that they think they will finish in the Premier League next season.

Is there a way to have the team in the left hand 'Teams' box struck through when it is selected in the drop down menu in the right hand 'Barclays Premier League Table' box? The idea obviously being that teams are crossed off as and when you pick them.

Thanks in advance.