Ravens defensive tackle Haloti Ngata returned to practice for the first time since tearing his left pectoral muscle during the Pro Bowl. He was limited to individual drills, but he still expects to be ready for full practices at the start of training camp in late July. Ngata estimates that he is between 75 percent and 80 percent. ?I think I?m a little bit ahead of schedule,? Ngata said. ?All I?m doing is building the strength back.?