With the uncertainty of Chase Utley's ailing knee, the Phillies have added another potential substitute to the mix. Already stocked with new faces ready to fill a void if Utley is unable to open the season on the active roster, Philadelphia has added veteran second baseman Luis Castillo. The 35-year-old Castillo was released by the New York Metropolitans on Friday. Castillo has been an All-star three times, has won the Gold Glove Award three times and has twice led the National League in stolen bases. Castillo, a switch-hitter, is a career .290 hitter in 15 Major League seasons. Utley has been sidelined throughout the entirety of spring training with chondromalacia and bone inflammation in his right knee. While Utley has seen some improvement recently and has continued to participate in batting practice, he has still been unable to take on full baseball activities. Other players in camp witht he Phillies this spring that are competing for a roster spot include Rule 5 pick Michael M...