By Stephen English

Injured MotoGP champion Jorge Lorenzo was passed fit by race direction on Friday morning at Laguna Seca, but the Spaniard is far from certain to race on Sunday.

Having undergone two operations on his broken collarbone following big accidents at the Dutch TT and German GP the Yamaha star has faced questions about why he has decided to compete this weekend.

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When asked if Yamaha have placed pressure on him to race the Spaniard dismissed such speculation.

"The pressure is from myself," said Lorenzo, who is eleven points from new championship leader Marc Marquez. "I want to ride and Yamaha have never pushed me to race here, it was my decision; I want to win the championship."

But wanting to race and being able to race are two different things and Lorenzo went on to say that he would assess his condition after this afternoon's second practice session.

"I felt better at Assen. I didn't get inflammation like I did in Assen, but if I get it tomorrow or on Sunday it is not so simple to race here at Laguna. I will try this afternoon and see how I feel."

Lorenzo rode for just eight laps this morning, finishing the cool and misty session in eleventh (+1.684s). Fellow injured title contender Dani Pedrosa chose to sit out the session but will return in FP2.

Pedrosa, who cracked his collarbone at the Sachsenring, is presently two points behind rookie Honda team-mate Marquez.