No seriously, she actually shoots and scores.  This isn't a metaphor!
As US Weekly put it:  

Touring the Olympic Park and meeting with staff and dignitaries, the beaming Duchess of Cambridge, 30, was eager to play field hockey with Great Britain's official team.

Clad in ultra-tight coral jeans, hoodie and sneakers, Kate (who was captain of her hockey team at the Marlborough school) grabbed a stick and scored a goal!

Here is Kate with the UK field hockey team:

Well played, Kate!

What do you guys think of Kate's hoodie, skinny jeans and sneaks look?