Great Britain head coach was delighted with his women's start to their London Olympics campaign – even if it did come at a cost.

The hosts made short work of Japan in the Pool A opener winning 4-0, with all four goals coming in the first half.

But Kerry confirmed his captain Kate Walsh had been taken to hospital after being hit in the face late in their contest and does not expect an update on her condition until Monday.

The 32-year-old is GB's most experienced player, but was caught on the left side of her jaw by a full swing by Akane Shibata and left the pitch with blood coming from her mouth.

'She's with the medical people and we are awaiting further information,' said Kerry. 'She has gone to hospital to be checked out.

The injury to Walsh was the only downside as striker Alex Danson grabbed the headlines with two goals either side of strikes from Wales international Sarah Thomas and Sally Walton.

Kerry added: 'I thought we controlled the game and took our chances in the first half and in the second half it was all about not being gung-ho and retaining that control.

'It was a very thorough and diligent performance. It was the first time the girls had played in front of the full 16,000 here and they weren't affected in any shape or form.'

Britain's women are back in action on Tuesday when they face South Korea.