Darren Richman has left Goldman Sachs, where he was a high-yield desk analyst. He starts today at the hedge fund division of Credit Suisse Asset Management, according to a sell-side high-yield analyst with knowledge of the situation. Richman could not be reached, nor could it be determined what his precise role will be. Calls to Lester Brafman, high-yield trading head at Goldman Sachs, and John Chrystal, a senior official at the CSAM unit Richman is joining, were not returned.