As promised, Williams named its 2010 lineup Monday, with Rubens Barrichello joining from Brawn GP and test driver Nico Hulkenberg making the step up from GP2, where he is the reigning champion.The duo replace Nico Rosberg, likely to take Barrichello's slot at Brawn, and Kazumi Nakajima, destination unknown.Rosberg made it known before the finale he was departing, Nakajima's departure seemed certain after Williams announced it was dropping Toyota power for Cosworth. Nakajima has a clos...