WEDNESDAY: Sullivan has elected free agency, while Cash and Daigle have accepted minor league assignments, according to Alyson Footer of the Astros (via Twitter).
SUNDAY: The Astros have designated Kevin Cash, Casey Daigle, and Cory Sullivan for assignment, according to Brian McTaggart of MLB.com. The moves were made in order to recall catcher Jason Castro, outfielder Jason Bourgeois, and third baseman Chris Johnson from Triple-A Round Rock.
Cash has caught 18 games for Houston this season, posting a slash line of .216/.286/.353 with two homers. The 32-year-old also pitched an inning in relief for the club in a blowout against the Reds in May.
Daigle pitched six innings across eight games for the Astros with an ERA of 7.50 with 4.5 K/9 and 3.0 BB/9. This season marked Daigle's first cameo in the big leagues since 2006.
Sullivan, 30, has struggled at the plate thus far in 2010. In 70 plate appearances, the outfielder has hit .190/.261/.238.
According to a team press release, the moves will take effect on Tuesday. Castro and Johnson will move into the starting lineup, according to Alyson Footer of the Astros (via Twitter).