Austin MotoGP test: Marc Marquez fastest again on day two

Honda's rookie set a 2m03.853s lap to outpace team-mate Dani Pedrosa by 0.123 seconds.

"Having a good pace early was important, because it allowed me to start to try things out," said Marquez.

"For the rest of the day we kept dropping our times and keeping to our strategy: testing things and confirming the results to eliminate any doubt.

"We did a great job today and the team is really helping me a lot. I am learning so much during these days - most of all with the electronics."

Jorge Lorenzo was top Yamaha rider in third, with team-mate Valentino Rossi behind LCR Honda's Stefan Bradl again in fifth.

Yamaha will not stay for the final day of running on Thursday, which team boss Massimo Meregalli said was always the plan.

"Today the results we got are quite promising and we are leaving Austin with a lot of useful data," he said.

"The test here was organised by Honda to cover three days but we knew from the beginning that two days would be enough for us.

"The target was to allow the riders to get used to the circuit and get as much data as possible for our Japanese engineers."

American CRT teams Attack and GPTech, both of which will make wildcard appearances this year, joined for day two but had troubled sessions.

Pos  Rider            Team/Bike            Time       Gap
 1.  Marc Marquez     Honda                2m03.853s
 2.  Dani Pedrosa     Honda                2m03.976s  + 0.123s
 3.  Jorge Lorenzo    Yamaha               2m04.351s  + 0.498s
 4.  Stefan Bradl     LCR Honda            2m04.640s  + 0.787s
 5.  Valentino Rossi  Yamaha               2m04.960s  + 1.107s
 6.  Blake Young      Attack APR-Kawasaki  2m13.641s  + 9.788s
 7.  Michael Barnes   GPTech BCL-Suzuki    2m13.993s  + 10.140s