1. Hickman Leader

2. Harrison +10.574

3. Dunlop +6.956

4. Cummins +27.713

5. Brookes +12.734

Harrison's buffer is up to 6.956 over Dunlop at the Bungalow. He'll be first into the pits, where races can be won or lost.

Hickman is pushing up the mountain and his front wheel lifts up as he runs through Guthrie's. It doesn't do him any harm as he powers past McGuinness on the Mountain Mile.

His lead? Just the 10.574 seconds. Supreme stuff.

Richard Petrie
BBC Sport at the Isle of Man TT

The focus is about to change to pit-lane in front of a packed grandstand.

The pitstops, after laps two and four, are a distinctive feature of the TT races and are where races can be won and lost, every second counts in this time trial format.

Three members of the rider's pit-crew will be involved, one refuelling the machine, another changing the rear tyre and a third wiping the screen and the visor of the helmet, plus conveying news on how the race is going.

Speed and composure are essential elements of a successful pit-stop and add more to the spectacle and excitement for those spectators watching in the grandstand.

Once their pit-stop is complete riders must not exceed the 60km/hr speed limit in force in pit-lane before they gather speed onto the course again to begin another lap.

Petrol pumps are poised, jacks are at the ready....

1. Hickman Leader

2. Harrison +8.740 seconds

3. Dunlop +6.861

4. Cummins +25.734

5. Brookes +12.401

We're into Ramsey hairpin.

Harrison is first there and he's pulled off a massive time and he's 6.740 seconds ahead of Dunlop.

But that's nothing compared to Hickman! He's not 8.7 seconds out front!

Dominic Herbertson, who landed his first 130mph lap earlier in the week, and Sam West have retired.

1. Hickman Leader

2. Harrison +7.654 seconds

3. Dunlop +4.686

4. Cummins +22.826

5. Brookes +12.350

6 Hillier +2.756

Harrison is really pushing and his advantage over Dunlop is 4.686 seconds at Ballaugh Bridge on the second lap.

Hickman is still the one to watch and his lead is up to 7.654 seconds. That's a big buffer at this stage of the race.

1. Hickman Leader

2. Harrison +7.442 seconds

3. Dunlop +4.202

4. Cummins +19.020

5. Brookes +9.863

Harrison, as we come to expect now, is the first man into Glen Helen.

Johnson is next through but he's off the pace, and Dunlop is next by and he's now 4.202 seconds off Harrison. That gap is growing.

We wait for Hickman....+7.7442 in the lead! Can anyone catch him?

It's absolutely mad that James Hillier and Josh Brookes, over a 37.73 mile circuit, were separated by just 0.098 seconds over the line.

That's a matter of inches.

1. Hickman Leader

2. Harrison +6.120

3. Dunlop +3.989

4. Cummins +14.899

5. Hillier +6.621

6. Brookes +0.098

7. Johnson +8.8112

8. McGuinness +0.487

9. Herbertson +2.990

10. Todd +2.646

Harrison crosses the line at the end of the first lap and it's a 134.529mph from a standing start! Mega stuff.

Dunlop, who has blasted past John McGuinness on the run to the line, is now 3.989 seconds off Harrison.

Hickman had to pass his team-mate over the mountain and that has cost him a marginal amount of time as he is now 6.120 seconds in the lead.

His lap was 135.349. That is faaaaast!

1. Hickman Leader

2. Harrison +6.135 seconds

3. Dunlop +1.761

4. Cummins +13.758

5. Hillier +4.4667

Dean Harrison is the first man to climb the mountain and is through the Bungalow!

He's faster than Dunlop again, he's now 1.761 seconds down on the English rider.

Hickman, starting further down the road, is through again and his lead is over six seconds! Wow!

Hickman is still absolutely on it here. Dunlop is charging but Hickman is flying at the top of the times!

We're hearing that Jamie Coward has retired at Ballaugh. That's a shame after another solid week.

1. Hickman Leader

2. Harrison +4.752 seconds

3. Dunlop +0.751

4. Cummins +11.992

5. Hillier +3.047

We're into Ramsey and at the hairpin.

Dunlop has cut the margin to Harrison down to 0.751 seconds. He's on a charge!

We wait for Hickman...and his lead is just shy of five seconds!

Dunlop has managed to get past Hillier on the road, but the Northern Irishman has a big ask already to try and claw in Hickman.

Meanwhile, Hickman has flown past Davey Todd, who was feeling under the weather, come the end of the Sulby Straight.

1. Hickman Leader

2. Harrison +3.477

3. Dunlop +1.706

4. Cummins +6.407

5. Hillier +0.0651

We're at Ballaugh Bridge already, this is a blistering start!

Harrison is first there and we wait for the riders behind...

Dunlop is through and he's brought the gap down to 1.7 seconds.

Here comes Hickman.....and he leads! By 3.4 seconds! That's a huge sector!