Astros placed LHP Stephen Randolph on the 15-day disabled list with a sprained right knee.
If there are no complete tears, that's very good news for Randolph.
Still, the Astros upgrade here by getting him out of the mix.
Astros recalled RHP Juan Gutierrez from Triple-A Round Rock.
Gutierrez will make his major league debut after going 5-9 with a 3.96 ERA, 139 H and 101/55 K/BB in 145 1/3 IP for Round Rock.
The 24-year-old apparently will be used in middle relief for now, but the Astros are hoping he'll develop into a third or fourth starter in time.
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