Mo Sanford (45) -Real first name: Meredith. Big righty who came up briefly in 1991 without much success. Taken by the Rockies in the expansion draft; didn't do anything there either.
Kevin Millwood (37) -Had some good years. I haven't heard anything about him announcing his retirement, but at this point he's probably about to get on with the rest of his life.
Jamey Wright (37) -Same age as Millwood, and what I wrote about Kevin applies equally here.
Frank Taveras (62) -Pirates shortstop, hit two career home runs- both in Cincinnati. The first was an inside-the-park grand slam in 1977; the second, in 1979, actually cleared the fence.
Henry Mathewson -Brother of Christy, the Giants gave him a quick look in 1906. Like Christy, a cousin of former Red Jack Billingham.