Finally the new MotoGP season is upon us and this one is looking to be even more exciting as the last with the return of Rossi to Yamaha. Rossi and Lorenzo have brought Yamaha six world titles between them, but their three-year term as team-mates between 2008 and 2010 caused plenty of headaches for the Japanese factory team so it will be a relationship worth watching closely.

Rossi and his crew were widely credited for the turnaround in fortunes at Yamaha, transforming the struggling YZR-M1 machine into a championship-winning bike from the off in 2004. Two world titles and 29 race wins in his first four years elevated the Italian to legendary status and, despite not winning the title in 2006 or 2007, made him untouchable in the team. But then along came Lorenzo with his smooth riding style and blistering pace making him Yamaha's top choice rider. This of course started the feuding and in-fighting drama we've all read about.

But anyone who had watched the Rossi-Lorenzo saga unfold over the previous three seasons could see that this was a battle mostly about pride. For the fans, it was a great piece of drama. For the riders, the parting of ways could not come soon enough as Rossi threw in the towel and headed off to Ducati.

With the new season starting at the Losail circuit in Qatar this week, how will the relationship fare second time round? Both riders have a lot to prove and a lot of pride at stake so it will be great to see how the team reconciles these opposing personalities. Both riders are at a very different part of their career of course, though with both expecting the championship title to be theirs this year I'm not sure that will make much of a difference.

However the relationship pans out off-track this year, on the track they are two very talented riders on equal machinery, with a lot of history and each with plenty of motivation to beat the other and prove, once and for all, that they are still the number one. As far as racing rivalries go, it does not get much better than that, should be a good season for the fans....