EMMITSBURG, MD., OCT. 9 -- John Nash, the Washington Bullets' general manager, still marvels at the play he saw Tony Harris make at the Portsmouth (Va.) All-Star Classic for NBA prospects last spring.

"I've never seen a player do what he did in an organized game," Nash said, "which is steal a ball at about midcourt, drive with two defenders at the foul line extended, kind of collapsing . . . he went between them, picked the ball up, bounced it on the floor and went up, caught it and dunked it. And I've got that on tape. I couldn't believe it."

That's what excites the Bullets about Harris, a 6-foot-4 guard from New Orleans and the American South Conference player of the year last season, averaging 19.9 points on 53 percent shooting.

Harris is going through camp with a huge burden. His mother suffered a stroke last week and he was excused for the weekend. But in the last couple of days he has come on strong and thrust himself into the Bullets' guard picture. Morrison: Guarded Optimism

The Bullets are eager to see how Mike Morrison does in the exhibition season. The guard from Loyola (Md.) is battling A.J. English for what likely will be a backup off-guard spot if Ledell Eackles signs, but right now is a starting slot.

"It makes you concentrate a little bit more, because I know the significance and I know the severity of the whole situation," said Morrison, who went to Northwestern High School in Hyattsville. "The mistakes you made as a first-year player you can't make as a second-year player."

So far, Morrison has shown moves that combine ease and power. Washington knew he had potential when it traded a conditional 1993 second-round pick to Phoenix for him last month. Possible Trade-Offs

Nash said the Bullets are working on a couple of possible trades for an off-guard if the Eackles talks don't advance. Nash and Eackles' agent, Eddie Sapir, have agreed not to publicly discuss the case, an indication things might be getting serious. . . .

Injuries: Harvey Grant missed his third consecutive day of practice with shin splints, but Charles Jones and Michel Bonebo both worked out after missing time with hamstring pulls. Mark Alarie came back from a root canal Monday night. . . . John Williams remains AWOL.