GB's women rather hanging on now as Japan force a flurry of penalty corners. Crista Cullen flies off her line to block a low shot in the shins. Ouch!

GB then counter and Mayumi Ono takes a stick to the face. It's not a game for the half-hearted is it?

Almost time for some swimming. Well, 35 minutes or so.

Some filler before the killer, here's Sharon Davies, Rebecca Adlington, Mark Foster, Helen Skelton and the rest of the swimming gang giving it some on our pool karaoke.

Back under way in the hockey.

Chris Hill: Just back from Canada on Monday so jet lag is working fine. Problem is, I need to be up in 5 hours for a flight to Milan

Andy Boon: Great job on the newsfeed. Living in Tokyo, I get lots of focus on Japanese athletes. That's good, but Go GB and Ganbare Nippon!

Andrew Fairbairn: Thanks for the brilliant extensive coverage @BBCSport, external from Melbourne. If its not Aussie or swimming, local tv isn't interested

Michelle Cullen: I may be living in Japan, but thanks to @BBCSport, external I am keeping up to date with #TeamGB, external at The Olympics. #proudtobebritish, external

From a BMX-er to the track cyclists...

We see your Darwin, and raise you Salford at 01:14 BST.

Image source, .

Kevin Jones: What on earth is to be done this time tomorrow when the swimming clashes with Jess and KJT?? Arghh.

Yeah. About that. We might need a bigger website. And more staff.

Missed the men's rugby sevens final? Watch all the action here in the highlights. 

Favourites Fiji win gold, their first ever Olympic medal and men's rugby sevens final as they beat silver medallists Great Britain 43-7 in a thrilling match.

We have it all covered and you can watch GB win medals in rowing, cycling and rugby sevens on the BBC Sport website.

Click here to watch any missed action in our Rio 2016 playlist.

It's a scrappy, sloppy affair so far. A phalanx of Japanese defenders block away a penalty corner. 

Welcome Emma, you're most welcome. Is California as nice as I imagine?

Mrs Arthur Dent: I have my newborn baby up feeding and that is a great way to watch the late night Olympics!  

David Fleming: no pressure of having to go to work in the morning. Took the entire olympics off on annual leave to watch them

Emma Jane: Very much enjoying @BBCSport, external Olympics feed. I moved to California last year so am staying with you for the rest of the night!

We have plenty of live action in hockey, badminton, handball and volleyball available on the BBC Sport website. 

Click here to watch all the live action in our Sport Live Guide

Ryan Lochte and Michael Phelps have more Olympic gold medals than Brazil.

Or Kenya. 

Michael Phelps races Ryan Lochte one final time tonight. They go in the 200m IM final at 03:01 BST.

Just the 37 Olympic medals between them.

Image source, ;

Have you seen our facewall of GB medallists?

It is really rather good, unless you are Richard Hounslow.

Actually, if you are Richard Hounslow can you send us a pic?

See the wall here.