Marc Marquez fractures right leg

LLEIDA, Spain -- MotoGP champion Marc Marquez will be sidelined for up to a month after fracturing his right fibula in a training session accident.

Marquez, who turned 21 earlier this week, will miss the second Moto GP test session scheduled for Sepang from Feb. 26-28, and perhaps the next session at Phillip Island, Australia, after hurting his leg during a dirt track training session near his hometown of Cervera.

Dr. Xavier Mir, who treated the Spanish world champion, says there was "no ligament damage or dislocation and no need to proceed with surgery. I expect he will need three to four weeks to fully recover."

Last season, Marquez became the first rookie in 35 years to win the MotoGP championship. He won the 125cc title in 2010 and the Moto2 title in 2012 before joining the top-tier circuit.

The MotoGP season begins on March 23 at the Qatar Grand Prix.

The Associated Press contributed to this report.