Jack Miller insists he has heard nothing more than "rumours" that he might swap teams with Ducati rider Danilo Petrucci next year.

Miller, 24, has four podium finishes with Alma Pramac Racing this MotoGP season, sitting eighth in the riders' standings, 27 points behind Petrucci.

Amid talk the pair could be swapping teams ahead of 2020, Miller – fourth fastest in Valencia Grand Prix practice on Friday – played down the speculation.

The Australian said, according to MotoGP.com: "There have been rumours around for the last weeks, but I haven't heard anything about them yet."

Miller could be set to contend for his second MotoGP victory and first since 2016 after a fine showing in practice, which was led by Petronas Yamaha SRT's Fabio Quartararo.

The Frenchman's time of one minute, 30.735 seconds saw him lead the pack ahead of Maverick Vinales and world champion Marc Marquez.

While Quartararo – who is sixth in the riders' standings – was pleased, the 20-year-old said his team had work to do if he was going to secure a first MotoGP victory on Sunday.

"It feels good to make such an improvement from one year ago at the test when I was in P17," he said on Yamaha's website.

"It shows our progress and it's a reward for our effort, and we'll continue to work in the same way going forward.

"We know that time attacks are one of our strengths, but we're not quite there yet on race pace. We need to work on the bike and find a good strategy to improve tomorrow.

"We're not far away, but we'll try our best tonight to find the issues and fix them."

MotoGP champion Marc Marquez will be aiming to cap another extraordinary season with yet another record in the final race of the campaign in Valencia.

Marquez had his sixth world title wrapped up with four races to spare after triumphing in Thailand last month, and has since gone on to set a new points record in MotoGP.

The Repsol Honda rider is now just five shy of becoming the first rider to reach 400 points in a single season.

Meanwhile, Valentino Rossi needs a podium finish in the season finale to avoid equalling his longest run without one in MotoGP.

Using Opta numbers, we take a look at the best facts ahead of the final race of 2019.

395 – Marquez's tally of 395 is a MotoGP record for a single season, while the Spaniard has also achieved 17 podium finishes.

23 – Excluding abandonments, Marquez has finished in first or second place in each of his last 23 races, his best such run in MotoGP.

7 – Maverick Vinales has finished on the podium seven times in 2019. He has never tallied eight podiums in a MotoGP season.

15 – Rossi, who has not won in his last 45 Grands Prix appearances, has not finished on the podium in his last 15 races, meaning he needs to do so on Sunday to avoid matching his poorest run of 16 between 2011 and 2012.

8 – There are some good omens for the Italian, however, with Rossi having triumphed eight times at the Ricardo Tormo circuit – more than any other rider.

12 – Andrea Dovizioso won the last Valencia Grand Prix, breaking a 12-year run without a victory for an Italian rider in the traditional season finale.

50 – Alex Rins will be bringing up a half-century of MotoGP races; he has two wins, eight podium finishes and two fastest laps in the top category.

244 – Marquez, who has won in only one of his six appearances at Valencia, has led for 244 laps this season in MotoGP – 51 more than the rest of the riders combined.

0 – Jorge Lorenzo could finish without a win, podium or pole position for the first time in his 12 seasons in MotoGP.

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