Whoever he is, he just took Mike Lowell's place on the Red Sox playoff roster. All I gather is he's spent 10 years in the minors, and made his major-league debut in late September, getting a whole eight regular-season AB's. Oh, and the player tag says he's a SS. So what'll he be? Defensive replacement if Jedediah Springfield Lowrie has to play 2B/3B? Emergency bullpen arm? 25th man?