The Phillies signed Alcantara to a minor-league contract Friday.
Alcantara finalized his deal shortly before Triple-A Lehigh Valley's opener and went on to appear in two games during the affiliate's season-opening series, going 1-for-5 with a double, three walks and a stolen base. The 29-year-old has previously seen big-league action in parts of four seasons but will likely need the Philadelphia infield to be ravaged by injuries before receiving a call-up.