Felipe Massa pits from third for mediums but re-emerges behind Nico Rosberg and is currently eighth.

Shohidur Rahman:  When Button can't get past Verstappen even with DRS you know the Honda engine is rubbish.

Nico Rosberg makes a first, and potentially only, pit stop. He is in to have softs swapped for mediums and is back out in sixth.

Up front and Lewis Hamilton increases his advantage further and now leads Sebastian Vettel by almost 10 seconds.

"Starting to lose the rears a bit," says Vettel over team radio.

Image source, hamilton

Sean Richardson:  Beautiful defensive driving by @ValtteriBottas, external. Great stuff.

William Lloyd:  C'mon Bottas!!

Aled Midha:  I'd get so excited if Bottas did one of his trademark round-the-outside overtakes on the parabolica

David Coulthard
BBC F1 co-commentator

"It's been a feature of his career that in wheel-to-wheel combat, Nico Rosberg has been slightly hesitant while Lewis Hamilton has been Senna-esque."

A bit of racing for Jenson Button as Max Verstappen's Toro Rosso moves past the McLaren, but Button attempts to bite back.

"Brace yourself, we might see a McLaren overtake here," says David Coulthard.

Sadly, we don't as Verstappen holds him off at the first chicane.

Uh oh, something wrong with Nico Hulkenberg's Force India?

"I hear a strange noise - maybe something on the exhaust," he says over team radio.

Hulkenberg is currently seventh.

Mercedes' engineer to Nico Rosberg: "Nico just be aware - brakes are very hot, brakes are hot."

Image source, Getty Images

Nico Rosberg, who looked to have been hampered by Kimi Raikkonen's failure to get away at the start, is trying to claw back positions.

He is eyeing a move on Valtteri Bottas' Williams - which is fourth - and has a go through Curva Grande, but can't complete the pass.

Jennie Gow
BBC Radio 5 live pit-lane reporter

Carlos Sainz is given a five-second penalty after leaving the track and gaining an advantage. He decides to get it served now and pits, locking up as he does so, before rejoining in 18th.

Max Verstappen, who has served his drive-through penalty, is now up to 13th.

Malcolm Porter:  Pastor Maldonado still stubbornly defying the rule that the more you do something the better you get…  

LH44 Pogba: @nico_rosberg, external still behind the Williams.... That's what happens when you sell your engines to a competitor.

Image source, Get

It is looking like another Italian Grand Prix will be won from pole as Lewis Hamilton increases his advantage to six seconds with 11 laps completed.

Still, a long way to go.

Frustrating for Jenson Button as his McLaren is lapping three seconds slower than the rest of the field. Daniil Kvyat is the next driver to swoop on by and Button is down to 13th.