In Doha, world champion Jorge Lorenzo and Yamaha teammate Valentino Rossi laid down early markers yesterday when they set the fastest times in first practice for the season-opening Qatar Grand Prix. Under the Losail floodlights, Lorenzo clocked 1min 55.440 seconds, with nine-time world champion Rossi 0.267 seconds off the pace. The Ducatis of Andrea Iannone and Hector Barbera were third and fourth fastest.However, the Honda machines of Dani Pedrosa and two-time champion Marc Marquez were only seventh and eighth on the time sheets, a disappointing start for a team which is traditionally Yamaha's greatest rivals.