1. Peter Hickman (BMW) Leader

2. Davey Todd (BMW) +2.673 seconds

3. Michael Dunlop (Honda) +5.989

4. Dean Harrison (Honda) +5.474

5. Josh Brookes (BMW) +0.026

Michael Dunlop has stretched his advantage over Harrison, but Todd, despite having to pass Josh Brookes, has pulled clear in second.

All eyes are on Peter Hickman....and his lead is up to 2.6 seconds!

John McGuinness is the first man to Ramsey but all eyes goes behind....

He's now 12.058 seconds down on Dean Harrison, who is the next man through.

Michael Dunlop and Davey Todd both hit traffic on the run up to Ramsey but manage to work their way through.

It's such a challenge to keep up the pace while picking your way through.

Richard Petrie
BBC Sport at the Isle of Man TT

Everyone has known for some years that Davey Todd has had the potential to make it to the very top of the road racing game and this week that potential has been fulfilled.

The Yorkshireman's awning in the paddock has become one of the most popular in the paddock for the fans to visit, visitors to the racing flocking to the Milwaukee BMW Racing set-up to catch a view of this year's first-time winner, have a selfie taken with one of their heroes, gather an autograph, or take a photograph of the impressive machinery on display.

Recent years has seen much talk of the 'big three' at the TT, the trio of Peter Hickman, Michael Dunlop and Dean Harrison, having won 26 of the past 27 solo races, other than TT Zero races, prior to this year's event.

Todd interrupted that sequence by taking victory in Thursday's delayed Superstock race one to claim his maiden TT success, having finished runner-up twice earlier in the week.

The 28-year-old is certainly a present, and future, force, at the Isle of Man TT.

1. Peter Hickman (BMW) Leader

2. Davey Todd (BMW) +0.109 seconds

3. Michael Dunlop +2.383

4. Dean Harrison +1.331

5. Josh Brookes +3.086

Peter Hickman and Davey Todd - wow!

They are separated by just 0.109 seconds after the first sector. That's nothing over 9.7 miles!

Michael Dunlop is 2.3 seconds down on Todd, with Harrison 1.3 further back!

John McGuinness is the first man to reach Glen Helen, quickly followed by his Honda team-mate Dean Harrison.

Harrison is there six seconds faster than McGuinness. Now we wait for the rest of the pack.

We'll give you time updates from Glen Helen, Ramsey and the Bungalow across the four laps.

Remember, it's a 37.73 mile lap through towns, lanes and the mountain road.

This is going to be fast and furious stuff.

Michael Dunlop, looking for his 30th Isle of Man TT victory, is away!

He would be a very popular winner.

Josh Brookes is next off and is followed by Davey Todd and the FHO BMW of Peter Hickman!

That's the four key contenders now on the road!

John McGuinness gets the famous tap on the shoulder and leads the field on the famous run down Bray Hill!

There's a longer gap where the injured Jamie Coward would be, before by key contender Dean Harrison, who is due a victory this week, sets off and is followed by the legend that is Ian Hutchinson and James Hillier!

The Senior TT is usually six laps and has become a victim of the wet weather that has hit the Isle of Man this week. Four laps on a Superbike is still more than a challenge, however, and the shortened race means it will be fast and furious stuff.

The Isle of Man TT is a time trial, rather than a traditional race as riders set off down Bray Hill at intervals of 10 seconds. The rider who completes their four laps, including a pit stop midway through, the quickest will come out on top.

1. John McGuinness (Honda)

2. Jamie Coward (Honda) - DNS

3. Dean Harrison (Honda)

4. Ian Hutchinson (Honda)

5. James Hillier (Honda)

6. Michael Dunlop (Honda)

7. Josh Brookes (BMW)

8. Davey Todd (BMW)

9. Craig Neve (Honda)

10. Peter Hickman (BMW)

Image source, Pacemaker

Richard Petrie
BBC Sport at the Isle of Man TT

As the riders and bikes head out onto the grid, onto the most famous piece of motorcycling tarmac in international road racing, there is a palpable sense of tension, nerves and excitement in the air.

After all the scheduling setbacks during the fortnight conditions are more or less perfect for these mighty 1000cc machines to blast off down Glencrutchery Road in a matter of minutes.

For most of these riders this is the most important race in their calendar.

These racers are regarded as heroes by the fans just for taking up the challenge of racing on the Mountain Course, the most challenging and demanding of circuits with little or no room for error.

The kudos for successful manufacturers is also huge, with BMW, Honda, Yamaha and Paton all enjoying the spoils of victory already this week.

The past few years have been dominated by Peter Hickman, Michael Dunlop and Dean Harrison, but this year a new contender has emerged in the form of Davey Todd.

The 28-year-old has made huge strides since joining Milwaukwe BMW, and claimed his first TT victory in the Superstock race.

He'll be looking to challenge again, and any one of the four big contenders could win it.

Image source, Pacemaker

Richard Petrie
BBC Sport at the Isle of Man TT

Mechanics and teams have been busy making final preparations to the bikes in the paddock while retailers have been making a roaring trade behind the grandstand as the countdown to the start of the Senior TT continues.

Attention to detail is crucial in this of all courses where any mechanical misfortune can have serious consequences.

The introduction of a 'Fan Park', with live music performers, rider interviews, food stalls, beer tents, ice cream vans and a large screen showing live and recorded coverage of the races, has proved a magnet for fans in recent years.

Behind the grandstand too fans are consuming some of the culinary delights on offer and discussing the prospects for the race with friends and family members.

Given the impact of the weather on race week, we've already had two races today - both won by the same man.

Michael Dunlop is on the brink of five victories in a week and 30 in his career after winning the Supersport and Supertwin races this afternoon.

He's a man on a mission and will be looking to make amends after his pit stop issues in Sunday's Superbike race.

Image source, Pacemaker

Richard Petrie
BBC Sport at the Isle of Man TT

The Isle of Man TT offers the ultimate thrilling motorsport experience as racers and their machines hurtle past mere metres away on public roads with all their inherent hazards in excess of 200mph on some parts of the circuit.

Regarded as the ultimate test and machine, some refer to it as 'the last genuine white-knuckle ride in motorsport'. It is motorcycle racing in its rawest form

After leaving the start-line, competitors in the Senior race hit 85mph in first gear and will reach 160mph in just over 10 seconds before they negotiate the plummet down Bray Hill.

Expectant spectators have been lining the course since early morning to secure their favourite vantage point and enjoy the intoxicating mix of the roar of these mighty machines, the smell of oil and the flash of colour as the bikes fly past like guided missiles at mindblowing speeds.

Richard Petrie
BBC Sport at the Isle of Man TT

It's been a record-breaking week here at the Isle of Man TT as in excess of 40,000 visitors to the island witnessed history as Michael Dunlop first equalled and then surpassed his uncle Joey's record number of wins at the famous road racing event.

Not for the first time at the annual races, Dunlop has been the name on everyone's lips as the Ballymoney rider took centre stage by winning the Supersport and then the Supertwins races.

The celebrations have been ongoing throughout the week and sales of Michael Dunlop merchandise going through the roof.

The euphoria has continued today as the Ballymoney man raised the bar still further with Supersport and Supertwins triumphs.

Could he raise the bar still further by becoming the first rider to win three races in a day?

Peter Hickman emerged the victor from a dramatic Isle of Man TT Superbike race in which Michael Dunlop was denied what appeared to be a certain record-breaking win.

Dunlop, who equalled his uncle Joey's all-time wins tally of 26 with his success in Saturday's Supersport race, had established a 25-second lead by the end of lap four but an issue with his visor after his pit-stop meant he lost in the region of 50 seconds and dropped down to fourth place.

The 35-year-old was forced to pull up on Bray Hill at the start of his fifth lap, take off his helmet, remove his gloves and adjust the sidepod on his visor.

Second-placed Davey Todd also dropped crucial time in the pits at the same stage of the race, allowing Hickman to take advantage of his rivals' misfortune, hit the front ahead of Dean Harrison and pull clear of the chasing pack on the final two laps.

The FHO Racing BMW rider's eventual winning margin over Todd was 5.8 seconds, with Honda Racing's Harrison completing the podium positions, 5.2 seconds in arrears of the Milwaukee BMW man.

Dunlop finished fourth, a further 15 seconds adrift, despite setting a new lap record for the Superbike class on his final circuit with the fastest lap of the race at 135.970mph.

Image source, Pacemaker