Needing room on the 40-man roster, the Astros designated for assignment 29-year-old infielder Gregorio Petit.
Petit played 37 games for Houston this past season, hitting .278 with a .723 OPS while seeing action at shortstop, second base, and third base.
He also hit .297 with 10 homers and a .798 OPS in 85 games at Triple-A, although his track record in the minors is much less impressive.