The Giants' big off-season signing was a 36-year-old whom two bad teams had rejected as a shortstop in the last year. Miguel Tejada rated as the third-worst defensive shortstop in baseball, by UZR, in 2009. The Orioles signed him and moved him to third base, where he was well below average defensively. A late-season stint as the Padres' shortstop confirmed the diagnosis: Tejada no longer has the range to play the position. Should San Francisco learn that it bought a lemon, it could turn to former No. 1 pick Emmanuel Burriss. After playing well in the majors in 2008, he broke his left foot in '09; rebreaking it last spring cost him much of his comeback campaign. Burriss is one of the few Giants with any semblance of leadoff skills (a .329 OBP with a 7% walk rate in the majors; 11/5 SB/CS at Triple A last year even after the foot problems), and despite spending some time at second base he is still the top defensive shortstop the Giants have who is anywhere near the majors. They should be prepared to make a quick change if Tejada continues to look done.