Baltimore police identified yesterday a pizza deliveryman who was fatally shot Sunday night, one of three unrelated killings in the city. Adama Diara, 22, of the first block of Swan Bridge Court in Baltimore County was found unconscious in his car, which had crashed into a tree in the 2200 block of Tucker Lane in Wakefield in West Baltimore, about 7:45 p.m. Sunday. Diara worked for Royal Pizza in the 1700 block of Woodlawn Drive, police said. Police also reported that Richard A. Green, 39, was the man who was found fatally shot about 5 p.m. Sunday in the 1300 block of W. North Ave. near Etting Street in West Baltimore. Angelo Ford, 49, of the 1000 block of Leadenhall St. was shot and killed near a parking lot there after he and a woman argued with a man about 6:30 p.m. Sunday over drugs. The woman, who was also shot, was expected to survive, police said.