Carlos Checa will make what will surely be his last MotoGP race start this weekend at Valencia.

The 38-year-old Spaniard, whose full time MotoGP career ended in 2007, now races in World Superbike - but was offered the chance to compete in the last two rounds of this season with Pramac Ducati.

A lack of dry track time to set-up the Desmosedici saw Checa retire from last weekend's Estoril race due to arm-pump, but he hopes to thanks Pramac for the opportunity with a 'good result' in front of his home fans this weekend.

"The rain at Estoril certainly didn't help me. I needed to run as much as possible on the track and the weather conditions did not allow me to do that," said Checa, third in WSBK this year.

"The feeling that I was able to develop with the bike during the weekend did not allow me to find the right riding position for the dry track. The forearm pain after a few laps did not allow me to give to the bike the right braking and the best way to enter in the turns.

"My results on Valencia's track are not exciting, but I have taken some satisfaction in my long career, arriving twice in the fourth position in the 2001 and in the 2005. Even if I do not feel any pressure, I'll try to do my best to give a good result to the Pramac Racing Team which have offered me this fantastic opportunity. "

Young team-mate and countryman Aleix Espargaro will also be taking part in his last MotoGP outing, at least for the immediate future, having signed to ride in Moto2 next year.

Espargaro made his grand prix debut at Valencia as a 15-year-old in the 125cc class in 2004.

"In the other three grands prix in Spain this year I've finished 15th position at Jerez, a good tenth position in Aragon and then a retirement at Barcelona, after a very good weekend," said Aleix.

"I hope to greatly improve on the position at Aragon and conclude in the best way my first MotoGP season. This track is special for me, I made my debut here in 2004 while I was riding a 125cc. "