Hampshire Olympians in action (From Daily Echo)

4:57pm

Meanwhile, in the Star Class another close finish sees British duo Iain Percy and Andrew Simpson finish third in the third race.

4:56pm

4:55pm

After that result, Ben Ainslie is tied in third with three others, behind Christensen in first and Lobert in second.

4:42pm

They turn at the fourth mark - Ainslie is struggling and is well off the pace and has dropped back to 12th.

4:38pm

Ainslie goes out left on his own. He's now up to eighth, some 98m behind the French leader.

4:36pm

In the Star race, Percy and Simpson have been making good progress and are making life difficult for the Brazilians.

4:34pm

Spanish sailor Truillo has capsized and suffered a broken rudder. He's currently in the water trying to get it re-attached. He was leading.

4:33pm

4:27pm

In Weymouth, Christensen has worked his way up the field and is now in fifth. Ainslie is still languishing outside the top 10.

However, with the boats taking different directions it is hard to say exactly how accurate that measurement is.

4:16pm

4:13pm

A great image of the final dive by Pete Waterfield and Tom Daley.

4:10pm

Ainslie still struggling in Weymouth. He's in 13th, a long way behind the Finnish leader as they sail across the wind. Hopefully he'll be able to make up some of the distance when they turn into the downwind leg.

On the plus side, Christensen is back in 21st after his earlier penalty.

4:08pm

Pete Waterfield speaking after the synchro competition:

"The fourth dive I don't know why, I just kicked a bit high. In this competition you cannot make mistakes.

"Our last two dives were brilliant but it was just not enough."

4:05pm

4:03pm

Finnish sailor Nirkko is leading the pack in the Finn class. Ainslie in 14th, taking up a central position as they close on the mark.

3:59pm

A fine final dive for Waterfield and Daley. Their back 2.5 somersault with 2.5 twists nets them 91.80, but that is not good enough for a medal. It looks like they will finish in fourth position.

3:56pm

And that's 91.20 for Mexico, who are out of reach for the GB pair. They need a final dive of over 100 to get a medal.

3:55pm

USA, who already hold a six point lead over GB, produce a sublime final dive, scoring 95.04. That might be it for Waterfield and Daley's medal hopes now.

3:55pm

Danish sailor Hogh-Christensen has a penalty to contend with after colliding with a start boat. Surely a boost to Ainslie's medal hopes.

3:53pm

Back in Weymouth, Ben Ainslie is back in action in the fourth Finn class race. He is currently in 14th.

3:52pm

The Chinese pair of Yuan Cao and Yanquan Zhang look to have sewn up the gold medal. 99.36 for their back 2.5 somersault with 2.5 twists. Something unbelievable will be needed to beat them now.

3:49pm

Going into the final round:

China: 387.42

Mexico: 377.70

USA: 368.43

GB: 362.85

3:48pm

3:48pm

The synchronisation looked good, but both divers seemed a little off on entry. Not a bad score from the judges, but 87.69 leaves them with plenty of work to do to get a medal.

3:45pm

USA hit a reverse 3.5 somersault with tuck for a score of 85.14. Mexico follow that up with a 92.07. Waterfield and Daley badly need a good dive in this round.

3:42pm

China's execution a bit off on their back 3.5 somersault in the pike position, but still a score of 92.88. Looking increasingly like they will be picking up the gold here.

3:40pm

And that has put Waterfield and Daley down to fourth at the end of round 4. China lead, followed by the daring Mexicans and USA.

3:39pm

Not what the GB pair would have been hoping for at all. They missed that one badly, and that could cost them. 71.28 is the score. Some serious catching up to be done on the leaders now.

3:38pm

Waterfield and Daley now up with a reverse 3.5 somersault with tuck...

3:37pm

Mexico try something that's never been seen before - an inward 4.5 somersault with a 4.1 difficulty. They looked pretty nervous it has to be said. But a pretty impressive effort. By no means perfect, but a score of 95.94 gets them right into the shake up.

3:36pm

3:33pm

China keeping the pressure up. A reverse 3.5 somersault (3.3 difficulty), and there's not much out of sync there. That's 93.06 for that one, as the judges award a string of 9.0 and 9.5s.

3:33pm

A decent sized crowd has formed at The Saints pub in Millbrook - Pete's local - to cheer on the local diver.

3:32pm

Live picture from the Aquatics Centre

3:31pm

So, after round 3, here's how it stands:

GB: 203.88

China: 201.48

Germany: 191.28

USA: 191.16

3:29pm

3:29pm

And what a fantastic effort that was! The crowd goes wild, as the dynamic duo reclaim first place with a score of 91.08.

3:28pm

Waterfield and Daley will attempt a back 3.5 somersault with their third dive.

3:26pm

The Chinese throw down a bit of a marker, scoring 89.28 on a back 2.5 somersault with 1.5 twist. USA, who began this round in third, score 82.56 for their inward 3.5 somersault.

3:23pm

Pete Waterfield's youngest son is backing his dad:

3:21pm

After round two, Waterfield and Daley top the standings. A great start, but still early days. The degree of difficulty starts to increase now, as we move into the optional dives.

3:20pm

And that's another very strong dive, for another score of 56.40. That moves them just clear of the Chinese pair at the head of the field.

3:19pm

3:18pm

Strong dives all round so far, as Waterfield and Daley reappear for their second effort.

3:13pm

3:12pm

The opening round of dives is over. Waterfield and Daley are tied at the top with China. USA are lying in third. Another round of 2.0 degree of difficulty dives to go now.

3:11pm

3:10pm

Huge cheers for the pair as they appear. And they nail their inward dive to tie with China at the top of the standings on 56.40.

3:09pm

Waterfield and Daley on the platform now for their first effort.

3:07pm

Ainslie still in sixth, with NZ's Slater still leading the pack and Hogh-Christensen is building on yesterday's success in second.

3:05pm

Gold medal favourites China immediately move to the top of the pile with an impressive forward dive.

3:04pm

The Russian duo get proceedings underway, with a solid opening backward dive.

3:03pm

3:03pm

3:02pm

3:00pm

Ainslie starts the final leg, and needs to make ground on Hogh-Christensen in second to stay in touch for the hunt for a medal.

2:59pm

Just a few minutes away from the start of the men's 10m synchro diving final now. Pete Waterfield and Tom Daley will dive seventh in the opening round.

2:55pm

Ainslie still in sixth. Currently ahead of him are:

1. NZ
2. Denmark
3. France
4. Netherlands
5. Greece

2:53pm

TV presenter, former England striker and crisp salesman Gary Lineker tweeted this last night about Southampton's Pete Waterfield:

2:49pm

Ainslie currently in sixth on the upwind leg, Hogh-Christensen in fourth, and Slater still out in front.

2:49pm

2:43pm

2:42pm

Ben Ainslie has cut the gap to Dan Slater down to 24m and is now in fourth.

2:37pm

Ainslie is 92m behind New Zealander Dan Slater in the lead, back in fifth position, but the Lymington man chose the opposite side of the course, so expect that to change at some point.

2:34pm

2:32pm

Back to Weymouth, and Ainslie has gone right at the second mark.

2:30pm

Away from sailing, we're now just 30 minutes from the beginning of the men's platform synchro final in the Aquatic Centre at the Olympic Park in London.

2:28pm

Ainslie hit the first mark in fifth place as the fleet now heads back on the down-wind leg.

2:24pm

Ainslie passes Hogh-Christensen to take fourth, as he now bears down on the leaders.

2:23pm

Ainslie is coming through the centre now and is closing on the Dane Hogh-Christensen, who beat him twice yesterday.

The Danish sailor is currently fourth, with Netherlands, Finland and Croatia ahead of him.

2:20pm

2:19pm

Ainslie has switched from the left to the right of the course, as he strives to make up ground and fight his way out of the second row.

Currently, the USA's Zach Railey is in the led, with the Dutch and New Zealand competitors hot on his heels.

2:12pm

2:11pm

Anslie is 14m behind the leader, Greece, in fifth place, after a couple of minutes.

2:07pm

The Finn class is all set to go any second now...

2:06pm

Ben Ainslie out on the water earlier.

2:05pm

Another Southampton sailor, Ben Rhodes was in action earlier in the 49ers. He finsihed 12th, as seen by Southampton reporter Simon Peach:

2:02pm

Ainslie is competing in the Finn class - the race has been postponed slightly for a change to the course to be made by the officials.

Meanwhile, thousands of people have made themselves comfortable on the Dorset shore to get the best view of the action.

1:56pm

In a short period, Lymington sailor and Olympic champion Ben Ainslie will be taking to the waters off the coast of Weymouth.

1:56pm

Earlier on today, rowers James Foad and Melanie Wilson made it through to the finals.

To find out more, read the story here .

1:55pm

Hello and welcome to the Daily Echo's coverage of today's main Olympic events involving local athletes.