Washington's new entry in the Women's Professional Basketball League announced yesterday it would play half its home games in Baltimore.

The franchise has dropped Washington from its name and will be known simply as The Metros.

Each city will host nine regular-season and three exhibitions games, said Jerry Lewis, the Metros' general manager. The team's headquarters are in downtown Washington.

The Washington games will be played at the D.C. Armory and the Baltimore contests at the Civic Center.

The D.C. Armory was unable to give the Metros enough playing dates for a full schedule there, team and armory officials said.

Lewis said yesterday that fan support in both cities this season might mean franchises in each for the 1980-81 season.

He also said that lack of support in either city this season could lead to all games being played in either Baltimore or Washington in future seasons.

"We have to go where the fans are." Lewis said.

"It (the split schedule) helps us." said Nat Frazier, the team president and coach, "because we get to look at both markets."

The Metros announced they had obtained the rights to Debbie Stewart. Maryland's all-time leading rebounder, and Cheese Fletcher from New York as their No. 3 choice in the 1980 draft.