Houston was released by the Ravens on Sunday, Jeff Zrebiec of The Baltimore Sun reports.
A 2014 undrafted free agent, the 25-year-old Houston has yet to make an NFL regular-season appearance. He may catch on with another team before training camp, but he'll be a long shot to make the final roster regardless of where he lands.
Houston signed on to the Ravens' practice squad back in early December, so he's already familiar with the ins and outs of the team. The second-year man has also spent time with the Patriots and the Steelers.