Mike Dunlap was fired after one season as coach of the Charlotte Bobcats. Under Dunlap, the Bobcats had the league’s second-worst record (21-61), finishing ahead of only the Orlando Magic. The Bobcats hired Dunlap last June after he had been an assistant at St. John’s. He was the first person to move directly from an assistant position in college to a head coaching job in the N.B.A. His firing means the Bobcats will have a third coach in three seasons.