There is a certain kind of ballplayer who gets remembered for what he added to a box score, and a rarer kind who gets remembered for what he took away from someone else's. Triston Hawthorne, a forward built more like a fence post than a basketball star, belongs to the second tribe, and on Thursday he is expected to tell Kelvin Sampson he would like to join his roster and keep on doing it. Word out of Ellisville, Mississippi — a town small enough that most everyone in it likely knows exactly whose backyard hoop Hawthorne first learned to swat shots off of — is that the kid has narrowed his…