The race was expected to be full of high drama, with drivers squeezing cars through narrow sections and an error or two never far away.
What happened? An unexpectedly dull inaugural race.
With only a 12-point gap between Vettel and Hamilton at the top of the drivers' championship, can Azerbaijan provide an exhilarating show this time around?
Choose your top-10 race result below...
Who will finish in the top 10 at the Azerbaijan Grand Prix?

An estimated 600 people gathered at Westfield in Shepherd's Bush for the so-called "die-in" demonstration.
Police said the arrests were made when a breakaway group assaulted security staff and damaged property.
The protest was in solidarity with rallies in the US prompted by the death of Eric Garner, a black man who died during an arrest in New York in July.
Two peaceful protests were held in west London on Wednesday evening, one inside the Westfield shopping mall and one outside.
It is believed those staging the occupation were asked to move outside, a request that was peacefully complied with, Scotland Yard said.
But, according to a police statement, a group then tried to gain access to the centre and were arrested on suspicion of public order offences and one man was held on suspicion of assault.
The Metropolitan Police said they dealt with the protesters using tactics "including a containment for the purpose of preventing violence and effecting arrests".
Commanding officer Ch Supt Mark Bird said: "We will always work with those that wish to demonstrate lawfully - as the majority of protesters did yesterday.
"However, we will not tolerate the small minority that offer violence or commit other criminal acts, such as that witnessed outside Westfield."
The Met said their inquiries into the incident were continuing.
Mr Garner, 43, was stopped on a street in New York on 17 July on suspicion of selling loose, untaxed cigarettes.
Police officers wrestled him to the ground and he complained he could not breathe as he was restrained in an apparent chokehold. He became unresponsive and later died.
Thousands of people have taken to the streets in the US in protest over his death and that of Michael Brown, 18, who was killed in Ferguson, Missouri on 9 August.
Grand juries in Missouri and New York have decided not to charge the officers involved.
West London protesters held signs carrying the same "Black lives matter" message as seen in US demonstrations.

Matthew Jillard, of Bordesley Green, said he had been visited by police more than 40 times in the past 18 months, often in the middle of the night.
He said police confused his house in Repton Road with a nearby address in Repton Grove.
West Midlands Police said it had taken measures to stop it happening again, but Mr Jillard said they had failed.
The 38-year-old labourer said in Christmas week police had mistakenly called at his house five times, disturbing the friends and family he had staying with him, including one call at 0300 GMT and one at 0500 GMT.
"I just don't know what to do. Nine out of 10 times they are really apologetic.
"When my girlfriend rang Police HQ at Lloyd House the gaffer there said he knew all about it because they had seminars about not getting it wrong.
"We used to get post for the address in Repton Grove but that has stopped after we contacted them.
"We've put up signs, we've tried to get them to change their records. Some officers have said it is their sat-nav because they're not always that accurate.
"I really don't know what more we can do."
A police spokeswoman said: "West Midlands Police can confirm that officers have attended an incorrect address in Repton Road on several occasions.
"Officers have been in regular contact with the occupier to apologise for the mistakes. A number of measures have been put in place to stop this from happening again."
Baku was the new kid on the Formula 1 block in 2016, presenting fans with the fastest street circuit on the calendar.
[NEXT_CONCEPT]
Police have arrested 76 people who were taking part in a mass protest at a major west London shopping centre.
[NEXT_CONCEPT]
A man from Birmingham is being plagued by police calling at his house in error, due to an address mix-up.