Qatari rider Mashel Al Naimi in action during one of the free practice sessions on the first day of new bike season at Losail International Circuit last night. Al Naimi emerged as the fastest rider. CENTRE: Young Qatari rider Abdullah Naif Al Qubaisi prepares to take a bend on his bike. RIGHT: German rider Nina Prinz in action. A total of 48 riders featured in two categories - the Superbike class and the Supersport category. Today’s races will start 6:00pm and 9:10pm in Superbike category and at 7:30pm and 10:30pm in the Supersport class, QMMF announced yesterday.