When is it? How can you watch it? What are the starting line-ups? All you need to know about the UEFA Women's Champions League semi-final first leg between Barcelona and Chelsea.

Holder Barcelona put itself in the driving seat with a resounding 4-1 over Chelsea in the first leg of its women’s Champions League semifinal on Sunday, with substitute Claudia Pina netting twice.

The UEFA Women's Champions League semifinal round will kick off on Saturday with the final four clubs representing three different countries. Arsenal will face Lyon, while current title holders Barcelona will host Chelsea on Sunday.