The Yankees haven’t made any headline-grabbing signings in this year’s free-agent market, which is unusual for them compared to past offseasons. The team has signed a number of free agents over the years, but as of this writing, Matt Holliday has been their sole “prize” this winter. And, he’s working on a one-year contract. As with any team, the results of the Yankees signings over the years have been a mix of highs and lows. Signing a free agent isn’t much different than gambling on the stock market. You hope you got the “stock” (player) at the right time and “it” (he) produces for as long as you have “it” (him) in your “portfolio” (on your payroll).