Today's outright assignments..
- Astros right-hander Mark Hamburger cleared waivers and has been outrighted to Triple-A Oklahoma City, tweets Brian McTaggart of MLB.com. Houston acquired the 25-year-old after he was waived by the Padres in July. In six minor league seasons, Hamburger owns a 4.03 ERA with 8.0 K/9 and 3.4 BB/9.
