Waiver claim on Guzman forces decision

Cristian Guzman is riding a 15-game hitting streak and playing improved defense, both recent developments that make the veteran shortstop more valuable to the Washington Nationals. But those same developments also make Guzman more attractive to other clubs in need of a shortstop down the stretch, creating a potential dilemma for the Nationals. Do they deal their longest-tenured player now while his value is high or keep him in the fold heading into 2010? Washington's front office may face that decision in the next few days after the Boston Globe reported the Red Sox put in a waiver claim for ... Email </a