The opening day of the fourth season of the Moto2 World Championship ended with Takaaki Nakagami fastest, following Thursday's pair of practice sessions under the floodlights at Losail, Qatar.

Pre-season favourite Pol Espargar? had topped the slower first session, while the seocn began in dramatic fashion as NGM Mobile Racing's Mattia Pasini and Argi?ano & Gines Racing's Steven Odendaal were involved in an incident, with the Italian attempting an ambitious passing manoeuvre on the South African as both riders went down.

Nakagami's best effort came in the shape of 2'00.924, making the Italtrans Kalex the rider the only person to duck inside the 2'01.000 barrier. Esteve Rabat, who led for much of the session, was less than a tenth slower, with Pons Klaex team-mate Espargar? left in third after a mistake on his final run.

Marc VDS Racing Team's Scott Redding, who had suffered technical problems in the opening minutes of first session, finished fourth from the second Italtrans Kalex of Juli?n Sim?n and NGM Mobile Racing's Simone Corsi, doing well to end the day as fastest Speed Up rider.

The top-ten was rounded out by Technomag carXpert's Dominique Aegerter, Marc VDS' Mika Kallio, NGM's Alex de Angelis and Mapfre Aspar Team Moto2's Nico Terol. Technomag's Randy Krummenacher ended his night in 16th place after suffering a fall as he lost control at penultimate corner Turn 15, but was able to walk away unhurt.