UPDATE 2: Tweet from Rossi's mechanic Alex Briggs (@Alex__Briggs): "We stayed in Brno 2 test 2day [Monday]. It rained. We packed up. Keep it under your hats!"

UPDATE 1: Yamaha to remain at Brno for a test session on Monday.

Jorge Lorenzo couldn't hide his disappointment after being unable to contain the Hondas at Brno, leaving his MotoGP title hopes in tatters.

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Yamaha's reigning double world champion led for 15 of the 22 laps, but was constantly shadowed by Marc Marquez and Dani Pedrosa.

Lorenzo successfully retaliated when title leader Marquez first took the lead, but the rookie burst back in front for good with four laps to go - with his team-mate Dani Pedrosa then relegating Lorenzo to third shortly after.

The next best Yamaha rider, Lorenzo's team-mate Valentino Rossi, finished ten seconds from victory.

"I am really disappointed because now I feel I am in the best shape of my career," said a glum Lorenzo. "I got a good start and the first lap I was very fast, but I cannot do much to defend against the Hondas. Anyway we had fun today, with the fight with Marc. I tried to stay with them to the end and most importantly I'm proud because I'm doing the best job I can do."

Marquez is now 26 points clear of Pedrosa with seven rounds to go. Meanwhile Lorenzo has slipped to 44 points, almost two race wins, behind Marquez.

"Not so much - pray and be patient!" smiled Lorenzo, when asked what to expect at Silverstone next weekend. "The championship is not lost yet but it's very difficult now."

Lorenzo added: "This year is a little more easy than [when defending his first title] in 2011, because then we were losing almost one-second sometimes in practice but could sometimes win the race.

"This time we are better, but Honda has improved its past weak points a lot. Also I got injured two times this year, that is why I am so far from Marc in the championship. But even without these injuries it could be difficult to win the title this year.

"Yamaha is an unbelievable factory that is trying to reduce the gap to Honda. They are working 24 hours a day and I believe in them. I have all my confidence in the engineers."

"We have to stay strong and keep the pressure on the other two boys because finally we are now fit again and we can push them, we couldn't a couple of races go" added team manager Wilco Zeelenberg. "As long as we can push them its possible they can make a mistake."

Lorenzo and Rossi are both eagerly awaiting the to-be-confirmed race debut of Yamaha's new seamless shift gearbox.

Yamaha tested the gearbox in private at Brno during the summer break, with the extra track time also predicted to help them at the GP weekend...

Team director Massimo Meregalli has revealed that Yamaha will now remain at Brno for a further day of testing on Monday, increasing speculation that the seamless debut is near.

"Finally the weekend ended below our expectations, however we were the protagonists in Brno, and led the race for the most laps. The [championship] ranking is complicated but our goal doesn't change.

"Tomorrow we will stay in Brno for a day of testing, we hope the weather is good so we can solve the problems we had this weekend and improve our bike."

The British MotoGP at Silverstone, the last of three back-to-back events, starts on Friday.