After 9 years, 106 podiums, 43 victories, 38 pole positions and 3 world championships, Jorge Lorenzo will start his final MotoGP race for Yamaha at Valencia.
The Spaniard is switching to Ducati next season and will make his debut in the post-race test.
But first he hopes to sign off with one more Yamaha win, a result that would also end a ten-race losing streak for Japanese manufacturer.
"It'll be a very emotional moment, because nine years in the same team, that gave me so much," Lorenzo said.
"So that's why I'm fully motivated to train as hard as possible and to finish with a win in Valencia. For sure it won't be easy, because the competition will be very close, but we are going to try."
Lorenzo sealed his third world title by leading last year's Valencia race from start to finish.
The Spaniard looks set to finish third in this year's championship, being unable to catch Marc Marquez and Valentino Rossi ahead of him, but holding a 17-point lead over Maverick Vinales.
Vinales will then take over Lorenzo's M1 seat, alongside Rossi, at the post-race test.
"The new season will start on Tuesday after Valencia and it will be very interesting because we will see for example Lorenzo with the Ducati and Iannone with the Suzuki," Rossi said.
"For us, it's also very important, because we hope we can have the new bike for next year. And will be an important test - we will also test in Sepang [at the end of the month] - because we need to understand if this [new bike] is the right way to improve."