Next up in our Trade Market series, second basemen.  We analyzed free agents at the position here. Dan Uggla, Marlins.  Uggla is currently neck-and-neck with Hanley Ramirez as the best-paid Marlin, and that puts the second baseman on the trading block.  Uggla's 2010 salary has yet to be determined since he's arbitration-eligible, but it'll be a raise from this year's $5.35MM.  That Chris Coghlan came up as a second baseman only increases the chance of an Uggla tra...