Getty The Baltimore Ravens signed a free agent edge-rusher after getting some news about David Ojabo. The Baltimore Ravens aren’t content with drafting Mike Green to improve their pass rush and have added a disruptive edge defender in free agency after receiving some news about oft-injured outside linebacker David Ojabo . Former University of North Carolina defensive end Kaimon Rucker signed with the Ravens on Tuesday, May 13. His arrival was confirmed by Ravens.com Editorial Assistant Matt