Nicky Hayden rode alongside eight different team-mates d𒀰uring his 13 seasons in MotoGP, which came to an end at last month's Valencia season finale.

So which of thꦍem i𒆙mpressed the 2006 world champion the most?

"I cou💯ld write a book on my team-mates because there have been a lot of different personalities over the years and I've learned a lot from each one," Hayden said.

"For sure, Casey for outright speed was in🌳credible. His ability to find the limit on a wet or dirty track is something I'd never seen befoꦇre. And you know Dani, the way that he gets the bike off the corners is incredible.

"But I think the person who impressed me the most has to be Valentino. Because I was his team-mate twice and the Ducati days when it was really low - for him to come b♛ack from that is extremely impressive.

"And at 36, to have as much success and money - he has everything. But to still have that same passion and fire is something that I found♔ motivating. I think that's𝔉 been more impressive than anything on track."

Hayden is moving to WSBK in 2016, ridi♔ng for the Ten Kate Honda team.

Nicky Hayden's MotoGP team-mates:
2015 - Eugene Laverty (Aspar Honda)
2014 - Hiroshi Aoyama (Aspar Honda)
2013 - Andrea Dovizioso (Ducati Team)
2012 - Valentino Rossi (Ducati Team)
2011 - Valentino Rossi (Ducati Team)
2010 - Casey Stoner (Ducati Team)
2009 - Casey Stoner (Ducati Team)
2008 - Dani Pedrosa (Repsol Honda)
2007 - Dani Pedrosa (Repsol Honda)
2006 - Dani Pedrosa (Repsol Honda)
2005 - Max Biaggi (Repsol Honda)
2004 - Alex Barros (Repsol Honda)
2003 - Valentino Rossi (Repsol Honda)