On this date 42 years ago, Brian Cashman was born. Cashman has been the General Manager of the Yankees since 1998 and is signed through 2011. With four weeks until the trade deadline, Cashman will certainly be active in the trade market. Let's take a look at what is being written in the Blogosphere... The Guttridge-Wang Trade Model attempts to quantify all aspects of a trade. MLB Notebook looks at how teams that are willing to spend will control this year's trade market.&#...