The following list shows the number of engines in use (or 'opened') by each MotoGP rider as of warm-up in Argentina, round 3 of 18. 'Withdrawn' means that an engine cannot be used again. The Factory class Honda and Yamaha riders are restricted to five engines for the season, while the others have a maximum of 12 engines available. Factory class: Marco Melandri (Aprilia): 5 engines [1 withdrawn] Andrea Iannone (Ducati): 3 engines Marc Marquez* (Honda): 3 engines Alvaro Bautista (Aprilia): 3 engines Valentino Rossi (Yamaha): 2 engines Jorge Lorenzo (Yamaha): 2 engines Bradley Smith (Yamaha): 2 engines Pol Espargaro (Yamaha): 2 engines Andrea Dovizioso (Ducati): 2 engines Danilo Petrucci...
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