Mariners Add LH RP Tyler Johnson to NRI List

As reported by many sources

Johnson is a lefty who missed all of 2008 with shoulder problems (uh-oh), but when healthy was pretty good at shutting down lefties with a plus breaking pitch. He's like a upper lower class version of George Sherrill, missing fewer bats but getting a few more groundballs. He costs nothing and could win a LOOGY spot in the pen, perhaps allowing RRS to move to Tacoma's rotation or should we be lucky enough to move Washburn, Seattle's.