A.J. Pierzynski Rob Grabowski-USA TODAY Sports In the past 10 days, Russell Martin and Mike Napoli have both signed contracts with new teams, leaving free-agent catcher A.J. Pierzynski alone at the top of the heap.According to FOXSports.com, the Texas Rangers are the latest team to show interest???certainly understandable given the fact they have lost three key offensive pieces in the past week.