This past Sunday was the first true stinker the Raiders put up this season, an uncompetitive 45-17 loss to the Patriots, which saw rookie No. 1 overall pick Fernando Mendoza make his NFL debut on the final drive in garbage time. For Vegas, their 3-0 start, followed by their close loss to the Chiefs, had slightly overrated them, with everybody believing they might be for real. How they respond this week will be a key sign.