Worth, 30, played five season in the majors with the Detroit Tigers from 2010-14. He batted .230 (60x261) with 11 doubles, two home runs, 19 RBIs, .295 slugging an a .588 OPS in 135 games.
Worth signed with the Arizona Diamondbacks on Dec. 12, 2014 but never made the major league roster. He spent the 2015 season with the Reno Aces, batting .314 (110x350) with 30 doubles, three home runs, and 47 RBIs in 106 games.
At the moment, the Astros are set up the middle with 2015 Rookie of the Year Carlos Correa and Gold Glove/Silver Slugger winning second baseman Jose Altuve. But Houston did part ways with two players, Jonathan Villar and Jed Lowrie, that were key parts to the Astros depth.
Worth may be useful tool if some of the Astros' prospect aren't ready for the bright lights in 2016.