The Houston Astros have made several roster moves this morning affecting a total of seven players in Major League camp. Three players were placed on the 15-day Disabled List: right-handed pitcher Josh Fields (right groin strain), left-handed pitcher Brett Oberholtzer (left index finger blister) and right-handed pitcher Brad Peacock (right hip surgery). Three players were optioned to Triple A Fresno: left-handed pitcher Kevin Chapman, outfielder L.J. Hoes and first baseman Jon Singleton. Additionally, OF Alex Presley was designated for assignment. The announcements were made by Astros General Manager Jeff Luhnow.