Dunlop continues to reel in Hickman on the road, but Seeley, Hutchinson and Harrison are all within 10 seconds.

Here's a look at what happened on the first lap as four bikes dropped out of contention.

Hickman and Dunlop had earlier cut Mather's Cross, too.

What a crazy first lap.

Todd's lead over Hickman stays around the 10 second mark.

Seeley is now third, just 0.6 seconds ahead of the rejuvenated Hutchinson.

Harrison and Kostamo are next up, and Dunlop is currently classified as seventh after his penalty.

Dunlop is catching Hickman on the road but is carrying that 10 second penalty. He'll need to pull a big margin if he's to stand on the podium.

Todd's advantage is up to 10 seconds as they round Ballysally for the third time.

Hickman is a lonely second, but behind Hutchinson and Seeley are battling it out for what will be third place.

Michael Dunlop is fourth on the road but has been handed a 10 second penalty for not putting his foot down after skipping the chicane at Mather's Cross.

Philip McCallen
11-time race winner on the BBC Sport website

We know all Michael Dunlop and he is not afraid to ride that bike.

The lead gap between Todd and Hickman is now 9.2 seconds.

Hutchinson, Dunlop, Rutter, Seeley, Kostamo and McGuinness are all scrapping it out for the final podium spot.

Todd gets it stopped into Metropole, as does Hickman.

Harrison, Dunlop et all have caught back up to the McGuinness, Kostamo and Rutter battle, so the podium battle is still on.

Todd's lead is up to eight seconds at Ballysally.

Does he have pit boards to tell him how far out in front he is?

We expected drama, just not on the first lap.

All those who went straight on have got back in the race, but Todd is miles clear out front now.

But with the wind so unpredictable, who knows how this will end up!

Steve Parrish
BBC Sport NI commentator

That has really messed up everyone's strategy! I think that was the tailwind at Metropole.

Davey Todd leads by 6.6 seconds after that dramatic first lap.

Peter Hickman is second and John McGuinness is third.

Michael Rutter is fourth in his 100th race while Enro Kostamo, Ian Hutchinson and Josh Brookes follow.

FOUR BIKES HAVE GONE STRAIGHT ON AT METROPOLE!

Davey Todd made it through but Harrison, Seeley, Dunlop and Hutchinson all went straight on.

What is going on?!

Dunlop and Hickman straight on at Mather's Cross!

Has that dropped them out of the battle?

Todd has pulled clear of the draft and is out front.

Can Hickman and the chasing pack reel him in?

Conor Cummins has had a moment and gone straight on at University.

Keith Huewen
BBC Sport NI commentator

Davey Todd has cleared off up the road like a rocket.

Davey Todd got a great exit out of Mill Road and is looking to build a gap.

Alastair Seeley has worked his way into fourth - he's already made it further than the first race on Thursday before his engine blew out.

It's Davey Todd who jumps ahead of Peter Hickman off the line!

Harrison third, Dunlop fourth as they sprint into York corner for the first time.

A look to the lights, engine notes rise....AND WE ARE RACING!